[OE-3096] stashing work in progress on letter contact rules admin system
[OE-3096] core changes to support letter warning rules functionality.
[OE-3096] fixed "add here" class
[OE-3096] core changes for the new sequence editor
[OE-3096] helper method to retrieve the list of firms for the admin dropdown with emergency included.
[OE-3096] bugfix
Merge branch 'develop' into jira/3096