Updated HUD elements
Wait for HUD to be initialized
Added camera images
Initialize active camera icon
Added rover selection glow
Fix visibility/pointer event handling
Better lightning bolt
Merge pull request #90 from virtual-world-framework/improve-hud

Improve hud
Add grid component
Add grid manager system to combine boundaries and gridded objects
Move boundary map into grid component
Remove extra methods from rover yaml
Remove the boundaryMap component
Add grid tile objects to hold grid information
Add griddable behavior for objects that are placed on the grid
Add grid addition from world transform
Fix grid merge conflicts