Idea: allow viewing all locations added by one source

[wbazant]

Totally an idea for later but it would be fun to build out this aspect of the site one day. In the same bucket:

• allow viewing a user's 'About you'
• some stats about a user: how many locations they added, last activity, when they joined
• allow viewing all locations added by the user
• put a report button there too (since the 'about you' section is an opportunity for spam and being inappropriate too )
• allow viewing all locations added in the same import

Motivation: I was testing clusters and found lots of locations in Johannesburg, then saw they were all added by one user Space_Ferret. Then I started wondering about what else this person added and so on. Being able to see this would add a new dimension to the site, since there would be somewhere to go after the 'location' is viewed.