Stabilizing

Mostly fixing stuff, This now seems to be a bit stable

Explain recursive path usage better in ui
Fix sending tags via buttons to txt2img and img2img
type additions, inadvertently pushed, later retouched.
allow setting gpu device via flag
Fix inverted cumulative checkbox
wrap_gradio_gpu_call fallback
Fix for preload shared access
preload update
A few ui changes
Fix not clearing the tags after writing them to files
Fix: Tags were still added, beyond count threshold
fix search/replace bug
(here int based weights were reverted)
circumvent when unable to load tensorflow
fix for too many exclude_tags
add db.json validation schema, add schema validation
return fix for fastapi
pick up huggingface cache dir from env, with default, configurable also via settings.
leave tensorflow requirements to the user.
Fix for Reappearance of gradio bug: duplicate image edit
(index based weights, but later reverted)
Instead of cache_dir use local_dir, leave cache to the user via env vars.
requirements fix for MacOS