Extract OverlayRenderer component from MapOverlay
Separate MainMenuOverlay from MapOverlay
Ignore Thumbs.db
Remove unnecessary field
Fix grid appearing in space center scene
Merge branch 'feature-overlayrenderer' into develop
Remove WindowToggle
Remove control window collapsing
Move GetCellUnder to extension class
Extract getCellColors
Extract Kethane-specific UI routines
Expose GridLevel property
Parameterize TerrainData with grid level