BUG Consistently save SiteConfig, and refactor Translatable hooks

Squashed commit of the following:

commit a60eddfacc710d3047bd1d5107e5df0cc6dba93c
Merge: c847b55 76be14b
Author: Ingo Schommer <ingo@silverstripe.com>
Date:   Fri Sep 7 17:02:47 2012 +0200

    Merge branch '3.0-translation-migration' of git://github.com/tractorcow/silverstripe-cms into tractorcow-3.0-translation-migration

commit 76be14b1fccc05b5dcca8c805e0354a42e75135d
Author: Damian Mooyman <damian.mooyman@gmail.com>
Date:   Fri Aug 24 08:28:18 2012 +1200

    FIXED: Indentation

commit 715b60387c970846db1bf9a5f14140aee49ce665
Author: Damian Mooyman <damian.mooyman@gmail.com>
Date:   Fri Aug 24 08:25:14 2012 +1200

    FIXED: Coding style inconsistencies

commit 6395f9030ed65b24494842ce74864ff7ebbf6c5e
Author: Damian Mooyman <damian.mooyman@gmail.com>
Date:   Thu Aug 16 16:30:11 2012 +1200

    FIXED: Issue where new SiteConfig instances weren't always saved to the database

commit aca242e31c8d98ee3b8acc397bf605ceb964e1bf
Author: Damian Mooyman <damian.mooyman@gmail.com>
Date:   Thu Aug 16 14:22:56 2012 +1200

    UPDATED: Refactored Translation module specific code out of the SiteConfig

code/model/SiteConfig.php

@@ -1,15 +1,8 @@
 <?php
+
 /**
  * Sitewide configuration.
  * 
- * h2. Translation
- * 
- * To enable translation of configurations alongside the {@link Translatable} extension.
- * This also allows assigning language-specific toplevel permissions for viewing and editing
- * pages, in addition to the normal `TRANSLATE_*`/`TRANSLATE_ALL` permissions.
- * 
- * 	Object::add_extension('SiteConfig', 'Translatable');
- *
  * @author Tom Rix
  * @package cms
  */
@@ -34,7 +27,16 @@ class SiteConfig extends DataObject implements PermissionProvider {
 	public static function disable_theme($theme) {
 		self::$disabled_themes[$theme] = $theme;
 	}
-	
+
+	function populateDefaults()
+	{
+		$this->Title = _t('SiteConfig.SITENAMEDEFAULT', "Your Site Name");
+		$this->Tagline = _t('SiteConfig.TAGLINEDEFAULT', "your tagline here");
+		
+		// Allow these defaults to be overridden
+		parent::populateDefaults();
+	}
+
 	/**
 	 * Get the fields that are sent to the CMS. In
 	 * your extensions: updateCMSFields($fields)
@@ -84,13 +86,6 @@ class SiteConfig extends DataObject implements PermissionProvider {
 		
 		$topLevelCreatorsOptionsField->setSource($editorsOptionsSource);
 		
-		// Translatable doesn't handle updateCMSFields on DataObjects,
-		// so add it here to save the current Locale,
-		// because onBeforeWrite does not work.
-		if(class_exists('Translatable') && Object::has_extension('SiteConfig',"Translatable")){ 
-			$fields->push(new HiddenField("Locale"));
-		}
-
 		if (!Permission::check('EDIT_SITECONFIG')) {
 			$fields->makeFieldReadonly($viewersOptionsField);
 			$fields->makeFieldReadonly($viewerGroupsField);
@@ -161,22 +156,14 @@ class SiteConfig extends DataObject implements PermissionProvider {
 	 * Get the current sites SiteConfig, and creates a new one
 	 * through {@link make_site_config()} if none is found.
 	 *
-	 * @param string $locale
 	 * @return SiteConfig
 	 */
-	static function current_site_config($locale = null) {
+	static function current_site_config() {
-		if(class_exists('Translatable') && Object::has_extension('SiteConfig',"Translatable")){
+		if ($siteConfig = DataObject::get_one('SiteConfig')) return $siteConfig;
-			$locale = isset($locale) ? $locale : Translatable::get_current_locale();
-			$siteConfig = Translatable::get_one_by_locale('SiteConfig', $locale);
-		} else {
-			$siteConfig = DataObject::get_one('SiteConfig');
-		}
 		
-		if (!$siteConfig) $siteConfig = self::make_site_config($locale);
+		return self::make_site_config();
-		
-		return $siteConfig;
 	}
-	
+
 	/**
 	 * Setup a default SiteConfig record if none exists
 	 */
@@ -191,39 +178,16 @@ class SiteConfig extends DataObject implements PermissionProvider {
 	
 	/**
 	 * Create SiteConfig with defaults from language file.
-	 * if Translatable is enabled on SiteConfig, see if one already exist
-	 * and use those values for the translated defaults. 
 	 * 
 	 * @param string $locale
 	 * @return SiteConfig
 	 */
-	static function make_site_config($locale = null) {
+	static function make_site_config() {
-		if(class_exists('Translatable') && !$locale) $locale = Translatable::get_current_locale();
+		$config = SiteConfig::create();
-		
+		$config->write();
-		$siteConfig = new SiteConfig();
+		return $config;
-		$siteConfig->Title = _t('SiteConfig.SITENAMEDEFAULT',"Your Site Name");
+	}
-		$siteConfig->Tagline = _t('SiteConfig.TAGLINEDEFAULT',"your tagline here");
 
-		if(class_exists('Translatable') && $siteConfig->hasExtension('Translatable')){
-			Translatable::disable_locale_filter();
-			$defaultConfig = SiteConfig::get()->first();
-			Translatable::enable_locale_filter();			
-			
-			if($defaultConfig){					
-				return $defaultConfig->createTranslation($locale);
-			}			
-			
-			// TODO Copy view/edit group settings
-			
-			// set the correct Locale
-			$siteConfig->Locale = $locale;
-		}
-
-		$siteConfig->write();
-		
-		return $siteConfig;
- 	}
-	
 	/**
 	 * Can a user view pages on this site? This method is only
 	 * called if a page is set to Inherit, but there is nothing

code/model/SiteTree.php

@@ -991,17 +991,13 @@ class SiteTree extends DataObject implements PermissionProvider,i18nEntityProvid
 	 * Stub method to get the site config, provided so it's easy to override
 	 */
 	function getSiteConfig() {
-		$altConfig = false;
+		
 		if($this->hasMethod('alternateSiteConfig')) {
 			$altConfig = $this->alternateSiteConfig();
+			if($altConfig) return $altConfig;
 		}
-		if($altConfig) {
+		
-			return $altConfig;
+		return SiteConfig::current_site_config();
-		} elseif(class_exists('Translatable') && $this->hasExtension('Translatable')) {
-			 return SiteConfig::current_site_config($this->Locale);
-		} else {
-			return SiteConfig::current_site_config();
-		}
 	}
 
 	/**