Add "None" option to extra networks dropdowns

fix(extras): fix batch image processing on 'Extras\Batch Process' tab

Improve custom code script

This change fixes an issue where an incorrect type was passed to the PIL.Image.open() function that caused the whole process to fail.

Scope of this change is limited to only batch image processing, and it shouldn't affect other functionality.

- Uses `gr.Code` component
- Includes example
- Can return out of body

This reverts commit 42687593, reversing
changes made to 1b63afbe.

Add `Upscale by` and `Upscaler` options to img2img

Fix quicksettings alignment

Temporary disable extensions option

fix [Bug]: very wide image doesn't fit in inpaint. Update style.css

Add support for the unclip (Variations) models, unclip-h and unclip-l

serve css as independent files

Fix for wide width image in img2img_sketch, img2maskimg, inpaint_sketch

Fix the style box dropdown not wrapping in txt2img and img2img

This reverts commit 84026821, reversing
changes made to e8bbc344.

Fix for API running unwanted alwayson scripts

Transfer generation parameters to previews

Make extra networks button togglable

feat: try sort as ignore-case

Fix dropdown width

Fix img2img aspect ratio overlay in Gradio 3.23.0