6993 Review improving gallery action to auto-batch uploads
6984 Implement Custom User parameters to toggle substitutions, translations, etc..
6983 Implement substitution support for manually specified user param
6982 Improve notification actions with optional field value check
6964 Improve user looping check to also look for a comma list of user ids
6963 Implement additional notification system actions
6962 Implement extendable User parameter
Bugs:
7000 Gallery Comments or Likes outputting empty when user does not have permission
6996 If manual or custom user returns null or false the action still executes on self
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