make --disable-opt-split-attention command line option work again

make --disable-opt-split-attention command line option work again

fix 10896 pnginfo parameters

use ui_reorder_list rather than ui_reorder for UI reorder option to make the program not break when reverting to old version

fix disable png info

Fix get_conds_with_caching()

fix "hires. fix" prompt sharing same labels with txt2img_prompt

split some code from ui.py into ui_settings.py ui_gradio_edxtensions.py
add before_process callback for scripts
add ability for alwayson scripts to specify section and let user reorder those sections

Mark caption_image_overlay's textfont as deprecated; fix #10778

Frontend: only look at top-level tabs, not nested tabs

Revert discarding penultimate sigma for DPM-Solver++(2M) SDE

Update xformers to 0.0.20

Sync requirements files

Refactor EmbeddingDatabase.register_embedding() to allow unregistering

fix disable png info

clarify issue template

Upgrade transformers from 4.25.1 to 4.29.2

Add & use modules.errors.print_error

Round down scale destination dimensions to nearest multiple of 8