Permissions Auditing Tool

Adds a basic permissions auditing tool. Users granted permission to view the tool can see how many users are granted a certain permission, who exactly has each permission and from what sources that permission is derived.

I would like to add more detail to the audit page, however without access to a foreign key main_char on AuthServicesInfo this becomes quite messy to achieve manually. I'm hopeful of changing the behaviour of main_char in 1.16 so I will revisit this then to add more detail.

Permissions overview:

By default the permissions overview only shows permissions which are applied to a user or group. You can switch to viewing all of them with the button in the top right.

Permissions audit:

Shows all of the users with the permission applied directly first, then all of the groups with the permission and their member after that. As mentioned, this is where I would like to add extra fields like main character name, main character corporation etc in the future.