Recreates marked for later button at end of works so you can mark work as read (note this is included in my AO3 Re-read Savior script)
Adds a copy of the "mark for later/read" button at the bottom of the fic with all the other buttons such as kudos, bookmark, comment etc.
This makes it easier for you can mark things as read when you finish reading.
Based off of "ao3 clone subscribe button at bottom" by scriptfairy