Fixed grunts only moving diagonally
Invulnerable Hulk enemy type added
Basics for level generation added
comment
Created a Player object
changed it to a global object
requestPreloads() needs some atention

there has to be consistency with g_urls keys and the names of the png images
prevented default events

for spacebar (if needed later) and arrow keys, more keys can be added into the _prevents array.
not sure if needed in keyUp, but if the site is acting funny it can be added too.
update2 preventDefaults

looks a bit nicer
fixed a bug
Score and lives displayed

The life counter works properly now.
Merge
Added a score multiplier
Improved the score display
Added a Score Image object

Neccesary to separate the score symbols from the player object
Merged the weekend's remote changes...

Merge branch 'master' of https://github.com/Ernir/robotron

Conflicts:
	entities/Grunt.js
Attempting to bring master changes into the enemies-ernir branch...

Merge branch 'master' into enemies-ernir

Conflicts:
	ROBOTRON.js
	managers/entityManager.js
Conflicts from bad merging (hopefully) resolved...
addedKillableDiagnosticToggle
Enemy inheritance model fixed by adding a common parent.