Add to MRF settings and update Pleroma.Upload.Filter.Mogrify setting

• Adds MRF Activity Expiration setting
• Displays labels of groups of setttings
• Ability to add custom values in Pleroma.Upload.Filter.Mogrify setting

CHANGELOG.md

@@ -13,6 +13,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - On Reports page add links to reported account and the author of the report 
 - In Notes add link to the note author's profile page 
 - In Moderation log add link to the actor's profile page
+- Adds MRF Activity Expiration setting
 
 ### Changed
 
@@ -22,6 +23,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Settings that can't be altered in Admin FE are removed: HTTP Signatures settings, Federation publisher modules and Oban Repo
 - When rendering user's profile, statuses, reports and notes check if required properties exist
 - Remove ability to moderate users that don't have valid nickname
+- Displays both labels and description in the header of group of settiings
+- Ability to add custom values in Pleroma.Upload.Filter.Mogrify setting
 
 ### Fixed