show variables for classes, small layout fix

app/main/assets/css/menu.css

@@ -34,7 +34,8 @@ body {
 }
 
 #nav li a {
-	width : 9em;
+	margin-left: 0.5em;
+	width : 8.5em;
 	display : block;
 	color : black;
 	font-weight : bold;

app/main/controllers/classes_controller.rb

@@ -17,14 +17,10 @@ module Main
     end
 
     def variables(clas_model)
-      self.variables(clas_model.name)
-    end
-
-    def self.variables(clas_name)
-      layout = Virtual.machine.space.get_class_by_name(clas_name).object_layout
+      layout = Virtual.machine.space.get_class_by_name(clas_model._name).object_layout
       vars = []
       layout.object_instance_names.each do |name|
-        vars << name
+        vars.push name
       end
       vars
     end

app/main/views/classes/index.html

@@ -9,24 +9,15 @@
        {{page._classes.each do |clas| }}
          <li>
            <a href="#">{{ clas._name }}</a>
-           <ul>
-             <li>
-               <a href="#">Echeneis</a>
-               <ul>
-                 <li><a href="#">Echeneis</a></li>
-                 <li><a href="#">Phtheirichthys</a></li>
-                 <li><a href="#">Remora</a></li>
-                 <li><a href="#">Remorina</a></li>
-
-                 <li><a href="#">Rhombochirus</a></li>
-               </ul>
-             </li>
-             <li><a href="#">Phtheirichthys</a></li>
-             <li><a href="#">Remora</a></li>
-             <li><a href="#">Remorina</a></li>
-
-             <li><a href="#">Rhombochirus</a></li>
-           </ul>
+           {{ unless variables(clas).empty? }}
+             <ul>
+               {{variables(clas).each do |var| }}
+               <li>
+                 <a href="#">{{var}}</a>
+               </li>
+               {{ end }}
+             </ul>
+             {{ end }}
          </li>
        {{end}}
      </ul>