[gbrainy] (17 commits) ...Merge branch 'gbrainy-17x'

[Jordi Mas <jmas src gnome org>]

Summary of changes:

  b9f01af... Allow to position the toolbar vertically (*)
  17e993b... Initial theme support (*)
  2d0c803... Merge branch 'master' into gbrainy-17x (*)
  3655bf8... Question + solution in the drawing area (*)
  68b65b5... Several small fixes (*)
  02c4597... Fixes mouse positioning (*)
  c46cce5... Visual support for Pause + refactor (*)
  1f3af74... Update new default value in documentation (*)
  62ff08f... Merge branch 'master', remote branch 'origin' into gbrainy- (*)
  7554b0c... Merge branch 'master', remote branch 'origin' into gbrainy- (*)
  71ab462... Introduces service pattern, translation service + fixes in  (*)
  ec89013... New TranslationWeb service (*)
  64a8ff5... Fixes bug #641070 (*)
  01e5d41... Enhacements to Web client (*)
  9b0f890... Google analytics tracking code (*)
  b5504b1... MemoryConfiguration service + langcode for language + fixes (*)
  23a2481... Merge branch 'gbrainy-17x'

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