1.7.1 version update is a quick unplanned fix, we have to make it:
- for Android to fix problem with Facebook login with some facebook accounts (within 6 days after release of 1.7.0, we hope it didn't affect anyone, since rebranding usually takes more time)
- for iPhone to fix version number on about screen (after about a month after 1.7.0, but this is not urgent, and should not affect rebranded versions)