Bugfix: StarlingTileSystem crashed when using ATF-Images

Removed a "new"-keyword from the byteArray-definition. This keyword has
caused the StarlingTileSystem to crash when an ATF-Image is loaded as a
ByteArray.
new feature: added "tilesFromBitmap" to StarlingTileSystem

Since it can be useful to add bitmaps into the StarlingTileSystem (e.g.
when creating large images with ObjectMaker2D) I added the additional
method "tilesFromBitmap".

I've also moved most of the code from "tilesFromMovieclip" into the
second new method"tilesFromBitmapData" since it also used by
"tilesFromBitmap".

Finally I removed "pWidth" and "pHeight" since they are always equal to
"tileWidth" and "tileHeight" and removed "bitmap" and "rect" since their
content is used directly in the following line and then never again.
new feature: "updateInterval"-property in StarlingTileSystem

With this additional "updateInterval"-property it is possible to reduce
the distance for loading tiles and/or their image sizes without creating
"blank spots" which are otherwise filled too late.

This way you can tweak a better tradeoff between distance, tile size and
update interval.
Starling 1.5
Starling updated to 1.5.1
Merge pull request #201 from RazorDE/atf-fix

Bugfix: StarlingTileSystem crashed when using ATF-Images
Merge pull request #202 from RazorDE/tiles-from-bitmap

new feature: added "tilesFromBitmap" to StarlingTileSystem
Merge pull request #203 from RazorDE/update-interval

new feature: "updateInterval"-property in StarlingTileSystem
Merge pull request #200 from caroach1080/master

LevelManager Update - Remove lvlEnded Signal. Add Nape Teleporter PhysicsObject.