Web connection skeleton implemented

- Created basic http connection flow
- Implemented connection with web server
- Deleted deprecated tests and mocks
Deleted Web test project
[Android][URBNG-496] Created base HTTP connection skeleton

Created skeleton for downloading data by HTTP from web server.
There's need to add missing implementation for all cases like (gameList,
gameDetails, logn, etc.), but basic methods are provided.
Merge remote-tracking branch 'upstream/android' into android
Deleted REST test project

Leftover cleanup.
Merge remote-tracking branch 'upstream/android' into android
Pull request fixes

Merging conficts and after remarks enhancments.
Fixes after pull request remarks
Merge remote-tracking branch 'upstream/android' into android
Merge pull request #140 from KamilLelonek/android

[Android][URBNG-496] Created base HTTP connection skeleton