[gnac/devel] (16 commits) ...Merge branch 'master' into devel

[David Joaquim <djoaquim src gnome org>]

Summary of changes:

  00985de... Updated Swedish translation (*)
  41b9c28... Updated Spanish translation (*)
  8cd850f... Updated German translation (*)
  6d337d7... Updated Slovenian translation (*)
  1c7ef9f... Created Galician translations and added gl to LINGUAS file (*)
  de93585... Code cleanup (*)
  581bf5b... Escaped text to prevent warnings (*)
  731ab75... Handled properly track-gain and track-peak tags (*)
  f47b359... Fixed a bug (*)
  3ccfe23... Improved display of VBR files' bitrate (*)
  64669c3... Disabled main interface during plugins' installation (*)
  bb8111a... Added WavPack filter (*)
  adf6c97... Cleaned playlists handling (*)
  aea007a... Improved file filters (*)
  65cbe0e... Fixed a concurrency bug (*)
  6bac2de... Merge branch 'master' into devel

(*) This commit already existed in another branch; no separate mail sent