Added a shotgun powerup
Removed supershotgun bug

Without this line, you could have the shotgun use the fire rate from the
machine gun. :)
fixed mute on brainspawn
removed doubled fireReset, cleaned up Player
GAME OVER screen, changed border color to red
Added a shield powerup
Merge remote-tracking branch 'origin/Features-Oddur'
Preserve text align in the game over function
preserve....v2
ctx save and restore should be used
Minor fixes
Merge remote-tracking branch 'origin/Features-Oddur'
Added debug buttons for the powerups
Minor adjustments
Changed tha music
Merge branch 'enemies-ernir'

Conflicts:
	managers/entityManager.js
Merge branch 'master' of https://github.com/Ernir/robotron because Oddur and I were merging at the same time!
Merge branch 'enemies-ernir'
Added a resetRage method