Eugene Nikanorov b68f901b54 Refactor db_base_plugin_v2 and to remove code duplication
fixes bug 1104379

Introduce CommonDbMixin which includes utility methods
to manipulate model queries.

Change-Id: Ib3602321328cbf945358e0581ecc649e3f69d196
2013-05-28 12:13:57 +04:00
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