Quick and EXTREMELY dirty gallery unlocker. 

I created a python file to scan for the two strings that 
add the images and videos to the gallery,
dumped them into a python script that can be run in game 
and tested it on a vanilla copy with no saves. 

What to do:
drop GalleryUnlocker.rypc into game subfolder
start the game
load a save or start a new game
press SHIFT + o to open the console
type:
unlockEm()
press enter
I don't want to know what you do after that. 