make save to zip into its own button instead of a checkbox

list changed Settings keys in UI
do not print VRAM/etc stats everywhere but in calls that use GPU

fix broken Restart Gradio button

From https://github.com/AUTOMATIC1111/stable-diffusion-webui/pull/3986#issuecomment-1296990601

add refresh button for aesthetic embeddings
add aesthetic params to images' infotext

Problem
everytime I modified pt files in embedding_dir or hypernetwork_dir, I
need to restart webui to have the new files shown in the dropdown of
Train Tab

Solution
refactored create_refresh_button out of create_setting_component so we
can use this method to create button next to gr.Dropdowns of embedding
name and hypernetworks

Extra Modification
hypernetwork pt are now sorted in alphabetic order

made save style button not die when you cancel