More asset cleanup

Rename smarty plugin to assets, rather than assetic.
Rename debugbar resources folder to assets.
Add copyFileAssets to Xoops\Core\Assets, used for fonts in debugbar
Merge Alain01's TinyMCE4
Fix whitescreen error
Clean up a few warnings and glitches

Correct several deprecated warnings
Quiet logger output in ajax calls
PSR-2 cleanup
Clarify message
Use large icons
Remove  debugging code
Add configuration file for asset management 

Options for
 - System wide asset references
 - Default filters
Merge remote-tracking branch 'upstream/master'
Merge pull request #118 from geekwright/master

Asset and Misc Cleanups