Fixed various defects. Improved code style.
Fixed INA and watTV video providers support.
Corrected logic of assets deletion within WYSIWYG.
Changes logic of asset tooltip icons rendering.
Improved permissions system of module.
Issue #1973940 by SebCorbin - Asset breaks action url of exposed filter form on unrelated views
Issue #1961816 by stefancatheline - Asset module not compatible with Renderable elements module
Small widget visual fixes.