People: move static/keys to ldap for every user that has them
For every user who had a static/keys entry, I checked to see if they had a LDAP entry with a key. If they did, I removed the static/keys/ and changed their key entry on the people page to point to the LDAP result.
There were a few people who are not even on the people pages anymore who had files here, so I removed those.
Reference: #332