[Feature request] - Clan leaders can add whitelist to their users

[LeventHAN]

Clan can create a group.
Clan will invite user to group.
Clan can give whitelist to users inside his group.

If user leaves group, auto remove whitelist.

If user joins another group, auto remove whitelist from previous group.

More ideas comes soon...

[LeventHAN]

Added in 26ab949

[LeventHAN]

Todo:

• Change limit of clans
  -> UI inside manager?
  -> URL inside manager?

• Fix bug where if you give as clanleader yourself clanmanager it f*$%s the UI
  

• Fix the image ratio to be circle and not egg / malformed circle (example above)

• more will be put here once I can test it fully...

[watchful-eyes]

Todo:

• Change limit of clans
  -> UI inside manager?
  -> URL inside manager?
• Fix bug where if you give as clanleader yourself clanmanager it f*$%s the UI
  
• Fix the image ratio to be circle and not egg / malformed circle (example above)
• more will be put here once I can test it fully...

that's on me I'll fix that as soon as possible
(that image made me laugh tho)

[LeventHAN]

I've pushed the most fixes already in PR 712e7a8

PS: The above bug is still in place will fix that too when I have time (by hasCommonElements(allRoles, xxxxxx))