diff --git a/core/model/DB.php b/core/model/DB.php
index 87ae40323..6a0e611c9 100755
--- a/core/model/DB.php
+++ b/core/model/DB.php
@@ -15,13 +15,13 @@ class DB {
 	 * @var Database
 	 */
 	protected static $globalConn;
-	
+
 	/**
 	 * The last SQL query run.
 	 * @var string
 	 */
 	public static $lastQuery;
-	
+
 	/**
 	 * Set the global database connection.
 	 * Pass an object that's a subclass of Database.  This object will be used when {@link DB::query()}
@@ -31,7 +31,7 @@ class DB {
 	static function setConn($globalConn) {
 		DB::$globalConn = $globalConn;
 	}
-	
+
 	/**
 	 * Get the global database connection.
 	 * @return Database
@@ -39,7 +39,7 @@ class DB {
 	static function getConn() {
 		return DB::$globalConn;
 	}
-	
+
 	/**
 	 * Connect to a database.
 	 * Given the database configuration, this method will create the correct subclass of Database,
@@ -58,7 +58,7 @@ class DB {
 		} // TODO:pkrenn_remove end
 		DB::setConn($conn);
 	}
-	
+
 	/**
 	 * Build the connection string from input.
 	 * @param array $parameters The connection details.
@@ -67,18 +67,18 @@ class DB {
 	public function getConnect($parameters) {
 		return DB::$globalConn->getConnect($parameters);
 	}
-	
+
 	/**
 	 * Execute the given SQL query.
 	 * @param string $sql The SQL query to execute
 	 * @param int $errorLevel The level of error reporting to enable for the query
 	 * @return Query
 	 */
-	static function query($sql, $errorLevel = E_USER_ERROR) { 
+	static function query($sql, $errorLevel = E_USER_ERROR) {
 		DB::$lastQuery = $sql;
-		return DB::$globalConn->query($sql, $errorLevel); 
+		return DB::$globalConn->query($sql, $errorLevel);
 	}
-	
+
 	/**
 	 * Execute a complex manipulation on the database.
 	 * A manipulation is an array of insert / or update sequences.  The keys of the array are table names,
@@ -87,11 +87,11 @@ class DB {
 	 * also be a SQL function or similar.
 	 * @param array $manipulation
 	 */
-	static function manipulate($manipulation) { 
+	static function manipulate($manipulation) {
 		DB::$lastQuery = $manipulation;
-		return DB::$globalConn->manipulate($manipulation); 
+		return DB::$globalConn->manipulate($manipulation);
 	}
-	
+
 	/**
 	 * Get the autogenerated ID from the previous INSERT query.
 	 * @return int
@@ -99,16 +99,16 @@ class DB {
 	static function getGeneratedID($table) {
 		return DB::$globalConn->getGeneratedID($table);
 	}
-	
+
 	/**
 	 * Get the ID for the next new record for the table.
 	 * @var string $table The name od the table.
 	 * @return int
 	 */
-	static function getNextID($table) { 
+	static function getNextID($table) {
 		return DB::$globalConn->getNextID($table);
 	}
-	
+
 	/**
 	 * Check if the connection to the database is active.
 	 * @return boolean
@@ -116,7 +116,7 @@ class DB {
 	static function isActive() {
 		return DB::$globalConn->isActive();
 	}
-	
+
 	/**
 	 * Create the database and connect to it. This can be called if the
 	 * initial database connection is not successful because the database
@@ -130,7 +130,7 @@ class DB {
 	static function createDatabase($connect, $username, $password, $database) {
 		return DB::$globalConn->createDatabase($connect, $username, $password, $database);
 	}
-	
+
 	/**
 	 * Create a new table.
 	 * The table will have a single field - the integer key ID.
@@ -139,7 +139,7 @@ class DB {
 	static function createTable($table) {
 		return DB::$globalConn->createTable($table);
 	}
-	
+
 	/**
 	 * Create a new field on a table.
 	 * @param string $table Name of the table.
@@ -149,7 +149,7 @@ class DB {
 	static function createField($table, $field, $spec) {
 		return DB::$globalConn->createField($table, $field, $spec);
 	}
-	
+
 	/**
 	 * Generate the following table in the database, modifying whatever already exists
 	 * as necessary.
@@ -164,7 +164,7 @@ class DB {
 	static function requireTable($table, $fieldSchema = null, $indexSchema = null) {
 		return DB::$globalConn->requireTable($table, $fieldSchema, $indexSchema);
 	}
-	
+
 	/**
 	 * Generate the given field on the table, modifying whatever already exists as necessary.
 	 * @param string $table The table name.
@@ -174,7 +174,7 @@ class DB {
 	static function requireField($table, $field, $spec) {
 		return DB::$globalConn->requireField($table, $field, $spec);
 	}
-	
+
 	/**
 	 * Generate the given index in the database, modifying whatever already exists as necessary.
 	 * @param string $table The table name.
@@ -184,7 +184,7 @@ class DB {
 	static function requireIndex($table, $index, $spec) {
 		return DB::$globalConn->requireIndex($table, $index, $spec);
 	}
-	
+
 	/**
 	 * If the given table exists, move it out of the way by renaming it to _obsolete_(tablename).
 	 * @param string $table The table name.
@@ -192,7 +192,7 @@ class DB {
 	static function dontRequireTable($table) {
 		return DB::$globalConn->dontRequireTable($table);
 	}
-	
+
 	/**
 	 * Checks a table's integrity and repairs it if necessary.
 	 * @var string $tableName The name of the table.
@@ -201,7 +201,7 @@ class DB {
 	static function checkAndRepairTable($table) {
 		return DB::$globalConn->checkAndRepairTable($table);
 	}
-	
+
 	/**
 	 * Return the number of rows affected by the previous operation.
 	 * @return int
@@ -209,7 +209,7 @@ class DB {
 	static function affectedRows() {
 		return DB::$globalConn->affectedRows();
 	}
-	
+
 	/**
 	 * Returns a list of all tables in the database.
 	 * The table names will be in lower case.
@@ -218,7 +218,7 @@ class DB {
 	static function tableList() {
 		return DB::$globalConn->tableList();
 	}
-	
+
 	/**
 	 * Enable supression of database messages.
 	 */
diff --git a/core/model/PDODatabase.php b/core/model/PDODatabase.php
index c346f0132..9d0cc4199 100644
--- a/core/model/PDODatabase.php
+++ b/core/model/PDODatabase.php
@@ -14,20 +14,19 @@ class PDODatabase extends Database {
 	 * @var resource
 	 */
 	private $dbConn;
-	
+
 	/**
 	 * True if we are connected to a database.
 	 * @var boolean
 	 */
 	private $active;
-	
+
 	/**
 	 * The name of the database.
 	 * @var string
 	 */
 	private $database;
-	
-	
+
 
 	/**
 	 * Last PDO statement, needed for affectedRows()
@@ -67,7 +66,7 @@ class PDODatabase extends Database {
 		}
 		parent::__construct();
 	}
-	
+
 	/**
 	 * Build the connection string from input.
 	 * @param array $parameters The connection details.
@@ -103,7 +102,7 @@ class PDODatabase extends Database {
 		$connect = $type . ':host=' . $parameters['server'] . $instance . ';port=' . $port;
 		return $connect;
 	}
-	
+
 	/**
 	 * Returns true if this database supports collations
 	 */
@@ -122,7 +121,7 @@ class PDODatabase extends Database {
 		}
 		return $collations;
 	}
-	
+
 	/**
 	 * Get the database version.
 	 * @return float
@@ -143,7 +142,7 @@ class PDODatabase extends Database {
 		$version = ereg_replace("([A-Za-z-])", "", $dbVersion);
 		return substr(trim($version), 0, 3); // Just get the major and minor version
 	}
-	
+
 	/**
 	 * Get the database server, namely mysql, pgsql, or mssql.
 	 * @return string
@@ -163,7 +162,7 @@ class PDODatabase extends Database {
 			return;
 		}
 		//Debug::backtrace();
-		if(isset($_REQUEST['showqueries'])) { 
+		if(isset($_REQUEST['showqueries'])) {
 			Debug::message("\n" . $sql . "\n");
 			$starttime = microtime(true);
 		}
@@ -177,14 +176,14 @@ class PDODatabase extends Database {
 			$duration = microtime(true) - $starttime;
 			Debug::message("\n" . $duration . "\n");
 		}
-		
+
 		if(!$handle && $errorLevel) {
 			$error = $stmt->errorInfo();
 			$this->databaseError("Couldn't run query: $sql | " . $error[2], $errorLevel);
 		}
 		return new PDOQuery($this, $stmt);
 	}
-	
+
 	/**
 	 * Get the ID for the next new record for the table.
 	 * Get the autogenerated ID from the previous INSERT query.
@@ -211,7 +210,7 @@ class PDODatabase extends Database {
 		$result = $stmt->fetchColumn();
 		return $handle ? $result : 1;
 	}
-	
+
 	/**
 	 * Determine if the the table is active.
 	 * @return bool
@@ -219,7 +218,7 @@ class PDODatabase extends Database {
 	public function isActive() {
 		return $this->active ? true : false;
 	}
-	
+
 	/**
 	 * Create the database and connect to it. This can be called if the
 	 * initial database connection is not successful because the database
@@ -307,7 +306,7 @@ class PDODatabase extends Database {
 			self::alterTable($tableName, null, $indexes, null, null);
 		}
 	}
-	
+
 	/**
 	 * Alter fields and indexes in existing table.
 	 * @var string $tableName The name of the table.
@@ -325,20 +324,20 @@ class PDODatabase extends Database {
 				$stmt->execute();
 			}
 		}
-		
+
 		if ($newIndexes) {
 			foreach ($newIndexes as $name => $column) {
 				$stmt = $this->dbConn->prepare("CREATE INDEX $name ON $table $column");
 				$stmt->execute();
 			}
 		}
-		
+
 		if ($alteredFields) {
 			foreach ($alteredFields as $field => $type) {
 				self::alterField($table, $field, $type);
 			}
 		}
-		
+
 		if ($alteredIndexes) {
 			foreach ($newIndexes as $name => $column) {
 				$this->dbConn->query("DROP INDEX $name");
@@ -347,7 +346,7 @@ class PDODatabase extends Database {
 			}
 		}
 	}
-	
+
 	/**
 	 * Rename an existing table, the TO is necessary for PostgreSQL and MS SQL.
 	 * @var string $oldTableName The name of the existing table.
@@ -358,7 +357,7 @@ class PDODatabase extends Database {
 		$stmt = $this->dbConn->prepare("ALTER TABLE $oldTableName RENAME TO $newTableName");
 		$stmt->execute();
 	}
-	
+
 	/**
 	 * Checks a table's integrity and repairs it if necessary - only available in MySQL, not supported in PostgreSQL and MS SQL.
 	 * @var string $tableName The name of the table.
@@ -379,7 +378,7 @@ class PDODatabase extends Database {
 			return false;
 		}
 	}
-	
+
 	/**
 	 * Helper function used by checkAndRepairTable.
 	 * @param string $sql Query to run.
@@ -405,7 +404,7 @@ class PDODatabase extends Database {
 		$stmt = $this->dbConn->prepare("ALTER TABLE $tableName ADD $fieldName $fieldSpec");
 		$stmt->execute();
 	}
-	
+
 	/**
 	 * Change the database type of the given field.
 	 * @param string $table The table where to change the field.
@@ -436,32 +435,32 @@ class PDODatabase extends Database {
 		}
 		$stmt->execute();
 	}
-	
+
 	/**
 	 * Create an index on a table.
 	 * @param string $tableName The name of the table.
 	 * @param string $indexName The name of the index.
 	 * @param string $indexSpec The specification of the index, see Database::requireIndex() for more details.
-	*  @return void
+	 *  @return void
 	 */
 	public function createIndex($tableName, $indexName, $indexSpec) {
 		$stmt = $this->dbConn->prepare("CREATE INDEX $indexName ON $tableName $indexSpec");
 		$stmt->execute();
 	}
-	
+
 	/**
 	 * Alter an index on a table.
 	 * @param string $tableName The name of the table.
 	 * @param string $indexName The name of the index.
 	 * @param string $indexSpec The specification of the index, see Database::requireIndex() for more details.
-	*  @return void
+	 *  @return void
 	 */
 	public function alterIndex($tableName, $indexName, $indexSpec) {
 		$this->dbConn->query("DROP INDEX $indexName");
 		$stmt = $this->dbConn->prepare("CREATE INDEX $indexName ON $tableName $indexSpec");
 		$stmt->execute();
 	}
-	
+
 	/**
 	 * Get a list of all the fields for the given table.
 	 * The results are not totally equal for all databases (for example collations are handled very differently, PostgreSQL disregards zerofill,...)
@@ -558,7 +557,7 @@ class PDODatabase extends Database {
 		
 		return $fieldList;
 	}
-	
+
 	/**
 	 * Get a list of all the indexes for the given table.
 	 * @param string $able Table of which to show the indexes.
@@ -614,7 +613,7 @@ class PDODatabase extends Database {
 		
 		return $indexList;
 	}
-	
+
 	/**
 	 * Returns a list of all the tables in the database.
 	 * Table names will all be in lowercase.
@@ -642,7 +641,7 @@ class PDODatabase extends Database {
 		}
 		return isset($tables) ? $tables : null;
 	}
-	
+
 	/**
 	 * Return the number of rows affected (DELETE, INSERT, or UPDATE) by the previous operation.
 	 */
@@ -713,4 +712,5 @@ class PDOQuery extends Query {
 	}
 }
 
-?>
+
+?>
\ No newline at end of file