Removed a useless check for manifestFilesArray == 0
Fixed a small issue where after all files were verified the progress bar continued to show updates. This was fixed by throttling the amount of progress reports to 1 every 10ms
If Launcher directory contains a launcherBackground.png it will be set as the background of the launcher
Implemented launcher background image. Now if the server or client's launcher folder contains a launcherBackground.png this will be displayed as the background.