photo apps for ipad over wifi I have a lot of family photos and home video stored on network folders (my PC, my NAS) accessible via wi-fi.

Are there photo manager and photo editor apps for me to directly work my pictures on my IPad?

By directly, I mean edit the picture (e.g fix red eyes, contrast) in the photo editor app without having to open a file browser app, copy it to my ipad and copy it back on my network folder. It also mean I can view and delete picture in the folder directly within the photo manager app.

P.S. I am open to jailbreaking my ipad or other solutions such as mounting the folders so they appear as local folder as long as the apps can open these files as it does for the Camera roll.
If your nas supports DLNA then that opens out great possibility's. Just write DNLA photo any you will find plenty of Apps otherwise you will be stuck with NAS unfortunately i dont have any recommendation for nas connection. 

This is what i recommend.. 

https://itunes.apple.com/bh/app/smartstor-fusion-stream-dlna/id410280827?mt=8

https://itunes.apple.com/bh/app/imediashare-lite-video-on-tv/id302026401?mt=8