Update app.py

added MeinaPastelV6 as another checkpoint model to choose... and finally, added an experimental startup option in case if someone wants to duplicate this space and run it on a GPU. read the instructions on how to enable that other option if you want to do so.

partially reverting checkpoint model changes (Counterfeit-V3.0 instead of CounterfeitXL, and that doesn't seem to work (at least for me) anyway)

did some checkpoint model changes

oops, wrong lora. that was LAS, not add_detail.

an attempt of updating it to 1.6.0 (part 3)

an attempt of updating it to 1.6.0 (part 2)

an attempt of updating it to 1.6.0 (part 1)

Duplicate from DreamSunny/stable-diffusion-webui-cpu