opf/openproject — pull request #386 by tessi (2013-09-02 09:57:48+00:00)
Title: more robust settings in pre-merge phase

when we haven't migrated yet, there is no settings table.
this doesn't hinder plugins to read/write settings (when
initializing the app).

solution: ignore setting-writes (but give a warning) and
answer an empty hash on setting-read when there is no
setting-table.

see: https://www.openproject.org/issues/1830