Small QoL addition.

While there is the option to disable all extensions with the radio buttons at the top, that only acts as an added flag and doesn't really change the state of the extensions in the UI.

An use case for this checkbox is to disable all extensions except for a few, which is important for debugging extensions.
You could do that before, but you'd have to uncheck and recheck every extension one by one.

Allow activation of Generate Forever during generation

persistent conds cache

Don't die when a LoRA is a broken symlink

Split mask blur into X and Y components, patch Outpainting MK2 accordingly

Forcing Torch Version to 1.13.1 for RX 5000 series GPUs

Fixes #11098

Fixes unexpected noise in non-outpainted borders when using MK2 script.

Prequisite to fixing Outpainting MK2 mask blur bug.

Generate Forever during generation

Update shared.py

link footer API to Wiki when API is not active

Fix upcast attention dtype error.

Without this fix, enabling the "Upcast cross attention layer to float32" option while also using `--opt-sdp-attention` breaks generation with an error:

```
  File "/ext3/automatic1111/stable-diffusion-webui/modules/sd_hijack_optimizations.py", line 612, in sdp_attnblock_forward
    out = torch.nn.functional.scaled_dot_product_attention(q, k, v, dropout_p=0.0, is_causal=False)
RuntimeError: Expected query, key, and value to have the same dtype, but got query.dtype: float key.dtype: float and value.dtype: c10::Half instead.
```

The fix is to make sure to upcast the value tensor too.

handles exception when parsing generation parameters from png info

print error and continue

fix rework-disable-autolaunch for new restart method

Zoom and pan: namespace & simplify

Restart: only do restart if running via the wrapper script

Simplify a bunch of `len(x) > 0`/`len(x) == 0` style expressions