Error in edit users search

[timreyn]

https://cubingusa.org/admin/edit_users

Entering

Tim Reynolds,

in the box raises an error at this line: https://github.com/cubingusa/org/blob/master/src/handlers/admin/edit_users.py#L18

QueryError: Failed to parse query "Tim Reynolds,"

Looks like app engine query strings aren't supposed to have commas in them: https://cloud.google.com/appengine/docs/standard/python/search/query_strings

[timreyn]

(This isn't very severe since it's admin-only and not clearly broken, just filing issues for various errors that monitoring caught)

[timreyn]

#240 rewrites the edit user page significantly, so I think this is obsolete.