Removed assets-merger.
Added assets module.
Enabled the new assets module, and disabled assets-merger.
Started migrating over asset-merger code to assets system.
Updated assets system.
Improved assets configs.
Moved assets from /assets/ to core module.
Updated assets submodule.
Updated assets module.
Fixed typo in assets config.
Added assets config for user module.
Merge branch 'feature/assets-refactor' into feature/asset-refactor

Conflicts:
	assets/img/glyphicons-halflings-white.png
	assets/img/glyphicons-halflings.png
	media/image/glyphicons-halflings-white.png
	media/image/glyphicons-halflings.png
	modulargaming/core/assets/img/glyphicons-halflings-white.png
	modulargaming/core/assets/img/glyphicons-halflings.png