[DF-1548] fix thread synchronization.
[DF-1538] Added transparency to UIWebView for android. Fix unittests.
[DF-1522] fix.
[DF-1469] Recovered fix which will allow to check source sprites modification date before launching MD5 calculations.
Merge branch 'dava/to_master'
[DF-1585] DeviceInfo::GetUDID() now returns old UDID for iOS lower than 7.0 and advertisingId for iOS greater or equal to 7.0.
Merge branch 'dava/to_master_qa'