Small Steam Update

Changelog

Features
- Added File Browser for new level creation in editor
- Added right panel for background objects allowing quicker access
- Added Markers to editor timeline for use while making levels
- Massive overhaul of player controller different / look and feel
- Started work on steam integration

Bug Fixes
- Fixed Issues with debug keys getting left in steam version of game.
- Fixed menu back key glitch
- Fixed video settings not applying glitch