Initial Catalan language translation.
Update header comments.
Initial Catalan language translation.
Add MiniHelp Catalan translation.
Fix comments.
A few more strings translated. Marking untranslated ones.
Merge pull request #108 from pataquets/master

Initial Catalan language translation
Catalan localization (mentioned in ChangeLog + 2 new strings)
Merge branch 'master' into beta