Issue #346: memory leaks (conservancy/kallithea)

[zork]

New issue 346: memory leaks
https://bitbucket.org/conservancy/kallithea/issues/346/memory-leaks

Łukasz Michalski:

Upgrading from 0.3.2 to .0.4.1 introduced memory leaks.  
I have 4 users and 2-3 active repositories.

Kallithea after start uses ~90Mb RSS \(250MB VSZ\).

After running gearbox service for 40 days RSS memory usage increased to 6.5 - 7Gb.

I need to setup service restart every 30 days.