Implemented removing of tokens from web ui, closes #126
Release notes for new server version 4
Dev server usage in android client
Improved data store usage, added appstats
Reverted missing required index
Do not send notification if printed text does not match the last message, hopefully now closes #120
Reduced error noise in server
ANDROID: Cleaned up the code a bit, fixed the removal of channels
Channel names are now case insensitive in Android client, closes 116
Ignored Duplicate messages
ANDROID: Added test message generator
Improved data access logic and performance
Improved performance, misc fixes, closes #135
Handled InvalidRegistration in server
ANDROID: Refactored network code, improved network error handling, closes #129
Clear notifications on OnResume
Plays sound if window is on top,  closes #137
Android can now be set to work in offline mode, closes #134