1.5.1-RC

Minor:

• support parsing text encoder blocks in some new LoRAs

Extensions and API:

• add postprocess_batch_list script callback

Bug Fixes:

• fix reload altclip model error
• prepend the pythonpath instead of overriding it
• fix typo in SD_WEBUI_RESTARTING
• if txt2img/img2img raises an exception, finally call state.end()
• fix composable diffusion weight parsing
• restyle Startup profile for black users
• fix webui not launching with --nowebui
• catch exception for non git extensions