Added sign up screen and validators (ValidationKomensky for Android)
Validators used on both sign up and sign in screens
Merge remote-tracking branch 'origin/sign_up_and_validators' into Changing_loading_progress

Conflicts:
	AndroidSuperProject/AndroidManifest.xml
	AndroidSuperProject/res/values/strings_activity_login.xml
	AndroidSuperProject/src/com/ruswizards/androidsuperproject/activities/LoginActivity.java