Bug fixes, Performance improvements and some smaller features

- In the map editor you can now enable the "Snap" option for repositioning objects. - improved the startup performance of Oblivity (note: the first time starting Oblivity after a new update is always slower) - improved overall menu performance - you can now input values out of the slider range, in the scenario creator - the reaction time global chart now renders correctly - added first tooltips to the scenario creator - added sound effects after each eye warmup/ wrist warmup - fixed some bugs concerning the eye warmup