activate request scope ASAP. Fix #969
Merge pull request #970 from lunika/scope

activate request scope ASAP. Fix #969
Enhanced data access functions
Log a warning if the asset's generated url is empty
Removed useless tests
Imported CSS is now displayed in the "format" menu
Merge pull request #972 from roadster31/tinymce-css

TinyMCE imported CSS could now be used in the editor
Merge pull request #971 from roadster31/data-access-fix

Data access enhancements