Merge pull request #174 from inthause/documents

Fix some code for 'abstract' property on document model
[FIX] initialize-model command.
[FIX] PluginManager
[FIX] initialize-model command.
[NEW] Add module Rbs_Geo.
[FIX] Bad merge.
Merge pull request #175 from intportg/dev

Module Rbs_Geo and fixes in initialize-model command
Add BackOffice menu registration