Update v0.5-rev0001

Changelog:
- Change entity files generation (improve map loading)
- Add Solar systems view
- Add system selection from objects in Solar systems view
- Add star to system content view
- Add loading box
- Add Message box for empty system (only empty if system is populated
with everything that's not part of your factions)
- Update StarOS_Map to be compatible with SMDecoder v0.6
- Change entity informations (show or hide certain informations)
- Remove old system selector
- Correct camera position on "space" press