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
Moves blockyUI to center and removes it while executing program
Make blockly interface draggable
Leave blockly interface up while running
Add ram bar to blockly UI
Adjust ram bar length and rename ram variables