1120 internal profiles - Githubissues

Adds public/internal/private profile visibility:

public profiles on search and profile page are visible to anyone
internal profiles on search and profile page are visible only to logged in, approved users

Adds new enum field on profile model for visibility
Adds migration logic that maps old field is_public to new visibility field
Adds second index for internal profiles (following this pattern)
On the map, only public profiles are shown with profile information (internal ones are counted as private) [We can change this in a subsequent PR such that logged in users can see internal users on the map]
On the pages of local groups, only public users are listed as organisers [We can change this in a subsequent PR such that logged in users can see internal users as organisers]
Replaces "is_public" field on admin panels with "visibility"

rtcharity / eahub.org