[pitivi] (28 commits) ...Merging translations

[Edward Hervey <edwardrv src gnome org>]

Summary of changes:

  dde0239... Reuse filechooserpreview in the missing files dialog
  457820e... Take out the depth parameter from the audio caps because in
  d9ab409... Removed unused parameter and renamed Pipeline._getFactoryEn
  f385ac9... Relax the Pipeline.releaseQueueForFactoryStream checks to n
  6afdd22... Minichange to replace a dict element access with a local va
  1d8709c... Initialize aencoder and vencoder with None in ExportSetting
  5873e2c... Make the errors messages in application.py translatable
  c9ab050... Changed StartupWizardGuiPitivi to forget about the wizard o
  2352388... Rename misspelled variable in StartUpWizard
  4e6d096... Simplified SartUpWizard by replacing the _getFileNameCb han
  0f2ceea... Fixed noop in ProjectManager.saveProject
  4545a84... Removed unncecessary condition in ElementTreeFormatter._loa
  88adc2f... Fix ElementTreeFormatter._discovererDiscoveryErrorCb to rep
  9147086... Fixed error message in Discoverer._busMessageStateChangedCb
  9e0924a... Fixed error message in ElementTreeFormatter._loadEffectTrac
  eb49bcc... Report a more descriptive error in ElementTreeFormatter._di
  d9b9826... Changed the title of the Error Loading File dialog to Error
  592ab65... Ensure the "welcome dialog" is hidden when loading a projec
  86f35e5... Fix a typo in the pre-commit hook.
  4d5b01e... Fix Signallable to not skip next handler when a handler dis
  18fa26b... Add copyright notice to startupwizard.py
  0c2e3a0... Make project file type name translatable in StartUpWizard
  b0e80b6... Removed unused objects from startupwizard.ui
  4fc63ca... Renamed StartUpWizard._quick_start_manual, for consistency
  4da04aa... Move the StartUpWizard key-press-event connection to startu
  e095500... Make sure the handlers connected when StartupWizardGuiPitiv
  3279923... Correctly detect the closing of the StartUpWizard window by
  2635689... Merging translations