Unlimited tokens actually work now. Works with textual inversion too. Replaces the previous not-so-much-working implementation.

Textual Inversion: Added custom training image size and number of repeats per input image in a single epoch

Pytorch 1.13 and later will rename _TypedStorage to TypedStorage, so check for TypedStorage and use _TypedStorage if it is not available. Currently this is needed so that nightly builds of PyTorch work correctly.

Updated txt2img screenshot (UI as of Oct 9th) for github webui / README.md

* add updateOnBackgroundChange
* typo fixes.
* reindent to 4 spaces

Fixes #1049