Moves dust.components to dust.bitfield, to reflect package contents.
Correct HTML5 build and launch for OpenFL
Fixes C++ compiler errors for Entity.hx. (Now the "member access into incomplete type" error has moved to the CollectionMap/CollectionMapping relationship)

Removes some unnecessary imports from CollectionMap.hx, CollectionMapping.hx and GUIConfig.hx (where the C++ compiler errors now surface)