New Version 0.5.3

- Created a class called Utils to hold basic utilities used anywhere. includes RoundTime, DateToDouble, and IsNumeric
- Completely restructured code into directories for easy access. Renamed ButtonList to NovaButtonList and MenuHandler to NovaMenu
- Created a NovaMessage class that handles info boxes
- Implemented the Information functionality with NovaMessage in Music/Video control units
- Created a class NovaOSD
- Created a class DisplayUnit which VideoDisplayUnit and TVDisplayUnit inheret from
- Implemented NovaOSD into VideoDisplayUnit for paused, ff, rr and general duration showing
- Implemented NovaOSD into TVDisplayUnit
- Standardized keymappings
- Added rtune support to TVDisplayUnit
- Finished keyboard handlers for both TV and Video DisplayUnits