Upgrade to build script to use gradle 0.12
Issue #173 value of sent_to is taken from device_id in case of no registered phone number
Merge pull request #185 from rafalsliwinski/issue-173_2

Fix value of sent_to, fixes #173
Update travis script to get it to work with current setup
Fix malformed travis yaml file
Hardcode target android version for the emulator to be created
Install platform-tools not sure if it's needed
Install SDK android-sdk_r23.0.2
Use new system image for the android versions
Use the right task for running test for all available flavours
Disable some tests temporarily
Added backward compatibility with v2.5
Merge pull request #191 from rafalsliwinski/issue-180

Added backward compatibility with v2.5