Improved import process for Fragments and Page Templates

The old import modal for Fragmentsand Page Templates is substituted by a new special import page, a new page with the import outcomes is added with the results of the process and last, but not least, the user is provided more import options for a better management of the already existing files: Overwrite Existing Entries, Overwrite Existing Items, Keep Both. A WARNINGS label is added as well to the fragments that were imported with warnings and that could cause malfunctions.

Status: Generally Available (aka OOTB)