OpenTreeMap/OTM2 — pull request #1163 by ahinz (2014-03-03 23:30:30+00:00)
Title: Reload tiles when adding a tree

A regression occurred when adding map features. The main issues is that
the geo rev count is updated by a database trigger, thus invalidating
any existing objects. Since we want to return the update geo rev, we
need to requery the instance.

Fixes #1152