v0.9.1 - Debugger added

Added extensions
- LiteDevelop.Debugger.dll (Debugger base)
- LiteDevelop.Debugger.Net.dll (.NET debugger)

Other updates
- Made classes internal in main app
- Update set up project
- Added LoadExtension method to IExtensionManager
- Bug fixes
Swedish translations
Merge pull request #7 from UbbeLoL/master

Swedish translations