[kupfer] (18 commits) ...Merge Karol's patch queue on master

[Ulrik Sverdrup <usverdrup src gnome org>]

Summary of changes:

  7f6a0c0... dbus: fix problem with crashing kupfer
  254a265... calculator: Calculate action now valid for other mathematic
  efe6b25... calculator: add missing operators (&|~); update description
  2ab3b50... calculator: separate action for expression with and w/o =
  5447d55... calculator: change localized decimal point symbol to dot
  6f6d79d... gtg: workaround for broken GetTasks method in GTG DBUS API
  a127230... plugin_support: fix problems with save passwords in keyring
  0e55991... trash +EmptyTrash action
  7f8a52a... websearch: find all search plugin from firefox/iceweasel
  f06a95f... Added check for no alternatives when getting settings.
  8bafece... session_gnome: support Gnome3 for logoff/shutdown actions
  2744487... gui/preferences: update plugin info on activate/deactivate 
  3b459ca... rhythmbox: use dbus to control rhythmbox and load library
  dbd9ac8... plugin top: fix for locales not using dot as decimal point.
  326e2d8... preferences: prevent Kupfer crashing on broken .desktop fil
  658e67b... preferences: catch exceptions when loading .Desktop files
  68dfd16... firefox: check is bookmarks file exists before loading it
  04bbd63... Merge Karol's patch queue on master