OLEFA: 19.12: WYSIWYG

1. General:
   • Uses a newer, enhanced version of the WYSIWYG editor.
2. OLEFA Base:
   • Offers a possibility to enforce a specific filename for document or pdf downloads.
   • Offers a possibility to explicitly display a field in a specific language instead of the current website language.
3. Tiparlo and Storyboard app:
   • The maximal number of allowed sessions is now granted for both the Storyboard and Tiparlo apps individually instead of cumulating them.
4. Various bugfixes and performance improvements.