Refs #4127 Deleting Less files which are the same as in Zeitgeist
Refs #4127 Removing icons which are the same as in Zeitgeist
Refs #4127 Morpheus is disabled by default (for now, while in development)
Refs #4127 Implementing possibility for Themes to overwrite any icon or resource by putting the new file in plugins/$ThemeName/XX - Morpheus theme now displays its icons! :)