[pitivi] (20 commits) ...Merging translations

[Edward Hervey <edwardrv src gnome org>]

Summary of changes:

  c5b0e9d... timeline.py: buggy first stab at roll editing
  8b6c6fb... ui.trackobject.py: activate roll mode when shift is held do
  3c97cbf... ui.controller.py: remember state of modifier keys when we r
  1f9f141... ui.controller.py: connect to and handle key_{press,release}
  b4be930... ui.controller.py: also set modifier state appropriately aft
  bc835d6... ui.trackobject.py: use controller modifer state to determin
  cabda9f... timeline.py: implement ripple mode for moving clips
  03ac7a1... eliminate editFocus method of trimming contexts
  8dfbbbf... timeline.py: handle edge snapping directly in MoveContext
  42403bd... timeline.py: handle edge snapping directly in roll modes of
  55e2113... test_timeline.py: test MoveContext ripple mode
  502d339... timeline.py: don't move clips on mode change if we haven't 
  b52817b... timeline.py: fix calculation of span
  7134d99... timeline.py: add getObjs{Before,After} time methods
  887166d... timeline.py: only ripple clips whose start > latest clip in
  d13c686... timeline.py: fix clamping of position in MoveContext._rippl
  563dad4... ui.trackobject: only set context mode during a key_press wh
  36ff4a4... timeline.py: fix ripple span calculation when there is noth
  9950ba0... test_timeline.py: add a couple regression tests
  b5535f6... Merging translations