add context to  two methods parameters  to have monthly statistics localised
XOAI add bitstream description to xoai metadata format
Move XMLElement of community.subcommunities to getter to prevent errors
REST writeStats to reuse existing context
Merge pull request #703 from LongsightGroup/DS-2206-rest-bug-fixes

DS-2206 REST - Fix statistics write context abort, and comm.getsubcom
fix db upgrade script name
Merge pull request #640 from helix84/DS-2147-oai-bitstream-description

DS-2147 XOAI add bitstream description to xoai metadata format
Merge pull request #432 from coelhoe/DS-1838

DS-1838 - add context to  two methods  to have monthly statistics local...
Merge remote-tracking branch 'upstream/master'