Fix bugs in design.

The static js were loaded after the page js.
parser_back_end.rb wasn't changed for the new routes.
The themes weren't parsed and saved correctly.

app/models/design/design.rb

@@ -70,26 +70,10 @@ class Design
     end
     if (self.default_css && self.default_css.changed)
       self.default_css.parse_urls
-      attrs = self.default_css.attributes
-      file = self.default_css.file
-      file_orig = self.default_css.file_orig
-      self.default_css.destroy
-      d = self.build_default_css(attrs) 
-      d.file = file
-      d.file_orig = file_orig
-      d.save
     end
     self.themes.each do |theme|
-      if theme.changed
+      if theme.changed?
         theme.parse_urls
-        attrs = theme.attributes 
-        file = theme.file
-        file_orig = theme.file_orig
-        theme.destroy
-        t = self.themes.build(attrs)
-        t.file = file
-        t.file_orig = file_orig
-        t.save
       end
     end
   end