[OH-Dev] For the /people/ map: I've seen things you would not believe

[Asheesh Laroia]

Hey all,

I noticed the map at /people/ never loads.

Research indicates that the problem occurs when getting the location data 
API endpoint, whose URL looks like this:

http://openhatch.org/+profile_api/location_data/?person_ids=2585,6691,430,...

Actually it lists all of the person IDs of all nearly 7000 registered 
users of the site.

That URL has at least two problems:

1) This location_data API endpoint does at least one SQL query (or cache 
lookup) query per user, which is just far too much. Now (as of 
748b7db71b941cf9728dfb6254dbb8935d262c2b ) it does only one query at all, 
and the test suite enforces this. (Yay!)

2) It is almost a 32KiB URL, which Apache (which we serve the site 
through: mod_wsgi -> Apache -> nginx) refuses to respond to.

I'm going to add a small bit of code so that these long lists of IDs 
are replaced by ranges. That should shrink the URL down to manageable 
size.

-- Asheesh.