Make Stop and Skip Button work for Hires fix

[bdulfer]

I'm using Hires fix quite a lot, because for me it gives slightly better results.
Generating continuously or using long wildcard lists helps a lot with finding the things I like.

Stopping or Skipping during these processes stops the image processing, which really helps. But still the Hires function is performed.

Here are two changes to modules/processing.py that will extend the stop/skip to Hires as well.

1. Remove lines 577 and 578 to keep the Skipped state for later
2. Change line 809 from
   if not self.enable_hr: to if not self.enable_hr or state.interrupted or state.skipped:
   and add
   state.skipped = False
   after that to skip the Hires processing

I don't know if this is the best way to do this, but at least it works.

[vladmandic]

i'll add it (with some refactoring)

[bdulfer]

Works like a charm!

Many thanks!