Allow group members to see participants to group events
Create a new parameter that group admin can edit "Allow group members to see participants to events - Y/N"
When set to Y, if I belong to a group and group is the event organizer, then "X number of participants" should be a clickable link. For other users (not part of the group) it should be unchanged (text without link).
The clickable link should be underlined and behave same as "show map"
The existing menu "Participants" below "actions" will become useless and should be removed

Default value for the new parameter: -for existing group: N (no change) -for new groups: Y (visible by default)
Additional comment:
When "Allow group memebers to see participants to events" is set to Y, then group members should also see the number of participants, even if parameter "Hide number of participants" is set to Y on the event:

Display and behavior of "x number of participants" (displayed or not / clickable or not / leading to read only or edit) depends on:
1 / "who am I" (anybody, group member or event admin)
2/ new setup "Allow group memebers to see participants to event"
3/ the group and "Hide number of participants" on events.
--> @GayLaurent to add a table
This was discussed in the forum.
This is nice for the group community. They might want to attend a big event together for instance.
