Merge pull request #431 from takeit/system_preferences

[CS-4802] rewrite header and footer in newscoop with bootstrap3 and register meta lists in plugins fix
CS-4862: Added field for language codes based on RFC 3066BIS standard.
CS-4862: Added comments to language entity
Merge pull request #432 from m038/CS-4862

Cs 4862
Merge branch 'master' of github.com:sourcefabric/Newscoop into system_preferences
added reCAPTCHA