Bug fixes
Fixed cache issue where master language attribute was allways picked if existed and no cached local version existed.
Merge pull request #7 from stenbacka/master

Better nullcheck on last modified
Fix for child pages cache depending on language
Merge branch 'master' of github.com:bogeblad/infoglue2
Tries to fix issue with old versions popping up
Fixed update logic
Better error handling
Fixed FF22-bug which does not allow for "toolbar" as frame name