Strings addition on Nautilus

Hello,

I'm going to add few strings to Nautilus. Yesterday I realized there are few constants that were not marked as translation, so this will be an addition rather than a change. The freeze exception rules state that this is automatically approved since these strings were already in the code, but not marked as translated.

The strings are:
Camera model
Creation date
Season number
Episode number
Track number
Artist name
Album name
Title
Original file name

They are located in src/batch-batch-rename-dialog.h

Best regards,
Carlos Soriano