Fixing UI and reported issues.

Internal cleanup, no separate interrogation for inverse
Fix issues with search and sending selection to keep/exclude
Fix issue #14, picking up last edit box changes
Fix 2 issues reported by guansss
fix huggingface reload issues. Thanks to Atoli and coder168 for reporting
experimental tensorflow unloading, but after some discussion, maybe conversion to onxx can solve this. See #17, thanks again Sean Wang.
add gallery tab, rudimentary.
fix some huggingface download issues
fixes for fastapi
added ML-Danbooru support, thanks to CCRcmcpe