Zenario 7.0.2d bug fixes

• Fixed a bug where you could not choose which administrator was set as the writer of a Content Item
• Fixed a bug where a plugin's css class could get removed when opening the "Framework & CSS" Admin Box
• Fixed an efficiency problem in Organizer where if a search returned no results, it still tried to load rows from the database
• Fixed a problem where the wrong thumbnails were shown in the installer when picking skins