Update to 3.12
    
    3.12.0 - "Anything is possible on paper" - 2014/03/25
    
    New Features:
      * NoteDirectoryWatcher plugin interval is now configurable
      * Import plugins are enabled by default and auto-disabled after import
      * (#723635)
      * Plugins are now checked for compatibility with Gnote
    
    Translations:
      * Updated translations:
        - Brazilian Portuguese (pt_BR)
        - Czech (cs)
        - German (de)
        - Hungarian (hu)
        - Kannada (kn)
        - Lithuanian (lt)
        - Polish (pl)
        - Serbian (sr)
        - Spanish (es)
      * Updated Czech manual (cs)
      * Updated German manual (de)
      * Updated Spanish manual (es)
      * Updated Lithuanian manual (lt)