Refs #366: Adds ability for administrators to alter the status of the observership, brings entrada in line with updated observership tables / model / etc.
Refs #366: Adds update sql, observerships menu item, observership notification cron jobs.
Refs #366: Adds ACL entries to installer SQL and upgrade SQL
A few minor bug fixes to associated with adding observerships. Refs #423
Merge branch 'develop' into feature-observership-enhancements

Conflicts:
	www-root/setup/install/sql/entrada_auth.sql
	www-root/setup/upgrade/1607/entrada.sql
Merge branch 'develop' into feature-observership-enhancements

Conflicts:
	www-root/setup/upgrade/1607/entrada.sql
	www-root/setup/upgrade/1615/entrada.sql
Merge pull request #423 from EntradaProject/feature-observership-enhancements

Feature observership enhancements