created monodevelop project and started UI
Merge branch 'frontend' of https://github.com/thecisguy/map-my-garage-sale into frontend

Conflicts:
	engine/grid.c
	engine/grid.h
	engine/main.c
	frontend/main.cs
New files added
Merge branch 'frontend2' of https://github.com/thecisguy/map-my-garage-sale into frontend2

Conflicts:
	engine/grid.c
	engine/main.c
	frontend/UnmanagedHelpers/unmanagedhelpers.cs
	frontend/main.cs