Tentative fix for the pooling issue
Documentation here: http://docs.sqlalchemy.org/ru/latest/core/pooling.html


git-svn-id: https://svn.bgdi.admin.ch/mf-chsdi/trunk/chsdi@4010 e100092c-b5e6-494f-8bdf-19c1ff2a4001
Make the same like in production (..!..)


git-svn-id: https://svn.bgdi.admin.ch/mf-chsdi/trunk/chsdi@4011 e100092c-b5e6-494f-8bdf-19c1ff2a4001
Merge branch 'svnsync'