A Group is no longer editable if the creator leaves the group.

[melissay94]

Describe the bug
If a user creates a group and then leaves the group, that group isn't editable anymore since only the creator has access to the edit button right now.

To Reproduce
Steps to reproduce the behavior:

1. Log in to GameRally
2. Click on Groups in navigation
3. Either create a new group
4. Sign out with that account and sign in with a new account
5. Click on Groups in navigation
6. Click on the group previously created and join it.
7. Sign out and sign back in with the first account
8. Navigate back to the same group created on this account.
9. Leave the group
10. Sign out and sign back into the second account.
11. Navigate to the same group. View that you cannot edit the group despite the fact the owner left it.

Expected behavior
That if the owner of the group leaves it, the ownership should shift to someone else.
Ideally, it would shift to a chosen individual. (Maybe a module with emails listed?)

Desktop (please complete the following information):

• OS: Linux Ubuntu
• Browser: Chrome
• Version: Idk

Additional context
Should fix this ASAP.