Fixes issue #20 UDD imports take too much memory
-Removed raw sql query
-Changed to query in chunks filtered by time greater than a pointer and
limited in size by a constant
-Process is about 30MB at start and a query with a chunk size of 5000 adds
approximately 25MB for a total of 55MB peak consumption
-Only uploads with a time less than the current time are uploaded to prevent
uploads with dates in the future from being uploaded
Fixed bug with build_people_db: Django 1.5 does not earliest()
Merge pull request #38 from daveeloo/importer

Importing fixes

Wahoo!