[FIX] Index vidyo in VidyoEventsEndDateIndex clone
[FIX] Vidyo deleting and clones

- Deleting when no clones or older clones in deleteOld.
- Keep forever in the VideoServices Overview indexes.
- Closes #1144
[FIX] Video Services Overview status message
[FIX] Change naming schema removing Indico suffix
[IMP] Allow to attach Vidyo Existing rooms

- Only if you are the owner of the existing room.
[FIX] Migration script for EventEndDateIndex init
[FIX] Error messages rewritten

- See #1144
[FIX] Small fixes - migration task

  - See #1144
[FIX] Delete from vidyo indexes when conf delete

- See #1144
[FIX] Naming in migration script

  - See #1144
[FIX] Spacing