* gradle task for uploading SNAPSHOT assets package
 * using SNAPSHOT assets package only in devel build type and DEV versions

 * reaction to download errors
 * error dialog on loading screen
 * retry of loading
 * internal dialog assets (external are not loaded)

 * calculate assets zip files checksum and save to server
 * download zip file checksum
 * check of downloaded assets zip file integrity

Feature pauseresume

See merge request !42

 * screen state API
 * screen state DB access
 * screen transaction fix

#27 Color overlays

Přidání získávání jednobarevných textur na ApplicationAtlasManager, který se postará o jejich dispose.
Dále přidání disposables na AbstracttablexiaScreen pro operace, kdy na screenu vznikne disposable a chceme ho nechat na koneci lifecycle disposenout.

Tímto nahrazeny overlaye u dialogů, game menu a únosu

See merge request !41