[Engine-libGDX] Using new version of libGDX
[Client] Improved music playback

In case the music or sound volume is very low, the sounds are not
actually played anymore.
[Client] Hack to resolve the sound problem of libGDX
[Engine] Tried to fix handling of double clicks after nifty drag
[Build] Updating version number for Illarion Resources
[Build] Setting development branch to snapshot resources
[Downloader] Improved timeout value detection
[Downloader] Additional status output on the download progress
[Downloader] Additional status output on the download progress
[Client] Receive new movement points after item update
[Downloader] Improved timeout handling in downloader
[Downloader] fixing the downloader

Allowing the downloader to download snapshots from the Illarion
repository
[Engine] Catching possible errors while loading textures
[Client] Updating tile movement points at item updates
[Client] Option for auto run in mouse movement is inverted
[Downloader] Launching the client on pressing enter
[Downloader] Changed text in the client
[Client] Hiding characters on other levels properly
[Client] Fixed updating of skill window
[Client] Minor code cleanup