OLEFA 17.10: Gallery/Interface improvements

1. Image galleries:
   • Image galleries now offer links to easily edit titles and descriptions for each picture
   • Support for multilingual titles and descriptions
   • Enhanced keyboard controls
2. OLEFABase:
   • Possibility to easily delete gallery images directly from within the record editor
   • Direct gallery preview from within the record editor
3. CMS:
   • You can now define links to telephone numbers by using for example [[+352 123456]] or [[contact:+352 123456]]
   • Both e-mail and telephone links are now encrypted to make them harder to grab by spam bots
   • More options are now offered by the Wednesday, 20th December 2017 command
4. OLEFA Calendar:
   • Calendar overviews are updated dynamically after someone edited an event
5. Various bugfixes and performance improvements.