Added new config files for custom tracked components for txt2img and img2img
Added "Add custom fields..." button
Renamed component IDs to start with "script_"
#28#31#32#33#34
* Added the ability to select which fields are saved when creating a new config preset (before, this could have been done manually by editing the .json config file)
* Moved some buttons around in the UI for creating a new config preset
* Added Hires Upscaler (txt2img_hr_upscaler), Upscale by (txt2img_hr_scale), and Restore Faces (txt2img_restore_faces) as eligible fields to be used in a config preset
* Tweaked default config preset values created during installation, removed "Default" preset
#27#6
the txt2img and img2img dropdowns are now separated. each has its own config file and its own config presets.
adjusted to sampler index not using checkboxes, but a dropdown now.
adjusted for the removal of firstpass width/height, and added Upscale by.
components on in the UI are tracked with elem_id instead of labels.
when creating a new preset, need to restart the UI because of stupid Gradio desync bug.
moved our dropdown UI section to below the gallery, instead of below the gallery's buttons.
added error handling incase the A1111 UI changes the again to hopefully not brick people's UI.
Create button renamed to Save & Restart.
#16
