Added the ability for medtech admins to mask as any user from the "Manage Users" page. Refs #223.
Merge branch 'develop' of https://github.com/EntradaProject/entrada-1x into feature-masquerade

Conflicts:
	www-root/setup/upgrade/1606/entrada.sql
Brought the user masquerade functionality up to date with current database changes and added the `acl_permissions` record from the update scripts to the install sql.
Merge branch 'develop' into feature-masquerade
Minor variable name changes, and a change to the user_access SQL query.
Merge branch 'develop' into feature-masquerade
Minor update to 1606 which had the wrong db version defined.
Merge pull request #404 from EntradaProject/feature-masquerade

Added the ability for medtech admins to mask as any user from the "Manag...