NOJIRA memory management improvements
Merge branch 'develop' of github.com:collectiveaccess/providence into develop

Conflicts:
	app/lib/core/Search/SearchIndexer.php
Merge branch 'develop' of github.com:collectiveaccess/providence into develop
NOJIRA Allow field_num=0
Merge branch 'develop' of github.com:collectiveaccess/providence into develop