Read Links from Files modification & Troll for updates

[TheLandYacht]

As mentioned in another thread, change the "Read links from Files" function to be an either/or to...
1. Check and/or update if files already exist, update as necessary.
2. Download the whole story if file doesn't exist.


On the trolling for updates request:
A function that goes through your fanfictiondownloader folder and trolls each file for that "Storylink" that's at the top of each story file... and checks for updates on all files in that folder.

It would simplify things if I could hit a button and say "are there updates to any of my stories", and have it update them instead of manually going through and doing each story individually.