[URBNG-73] Completed

Finished subtasks:
- [URBNG-450] [Android] Modify server  to send selected answers
- [URBNG-451] [Android] Modify UI to interact with user in sending
choices
Sample data and naming fixes.
Merge remote-tracking branch 'upstream/android' into android
Naming convention changed.
Merge pull request #159 from KamilLelonek/android

[Android][URBNG-73] Completed