Merge remote-tracking branch 'upstream/master'

New stuff from upstream
Merge remote-tracking branch 'upstream/master': new changes and merged features
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master': Pull latest updates
initial commit. Probably broken.
Remove selecting of next message.
It doesn't seem to be necessary, and it would always fail if there was only
one message in the inbox.
Tabs are the root of all evil
more comments on the mark unread implementation
updated Russian translation: new translations dealing with chans
Made inbox message retrieval API function also return read status
updated Russian translation: new translations dealing with chans
Merge pull request #339 from akh81/master

 Updated Russian translation: new translations dealing with chans
Merge pull request #335 from nimdahk/markUnread

"Mark Unread" in Inbox
Increment version number to 0.3.5
Merge pull request #338 from DivineOmega/return_read_status

Made inbox message retrieval API functions also return read status
Small backwards-compatible changes to API
Merge pull request #342 from Atheros1/master

Small backwards-compatible changes to API