Merge branch 'release_candidate' into dev

## Upcoming 1.2.1

### Features:

 * add an option to always refer to lora by filenames

### Bug Fixes:

 * never refer to lora by an alias if multiple loras have same alias or the alias is called none

 * fix upscalers disappearing after the user reloads UI

 * allow bf16 in safe unpickler (resolves problems with loading some loras)

 * allow web UI to be ran fully offline

## 1.2.0

### Features:

def list_available_loras():

    available_loras.clear()

    available_lora_aliases.clear()

    forbidden_lora_aliases.clear()

    forbidden_lora_aliases.update({"none": 1})

    os.makedirs(shared.cmd_opts.lora_dir, exist_ok=True)

        available_loras[name] = entry

        if entry.alias in available_lora_aliases:

            forbidden_lora_aliases[entry.alias.lower()] = 1

        available_lora_aliases[name] = entry

        available_lora_aliases[entry.alias] = entry

available_loras = {}

available_lora_aliases = {}

forbidden_lora_aliases = {}

loaded_loras = []

list_available_loras()

shared.options_templates.update(shared.options_section(('extra_networks', "Extra Networks"), {

    "sd_lora": shared.OptionInfo("None", "Add Lora to prompt", gr.Dropdown, lambda: {"choices": ["None", *lora.available_loras]}, refresh=lora.list_available_loras),

    "lora_preferred_name": shared.OptionInfo("Alias from file", "When adding to prompt, refer to lora by", gr.Radio, {"choices": ["Alias from file", "Filename"]}),

}))

    def list_items(self):

        for name, lora_on_disk in lora.available_loras.items():

            path, ext = os.path.splitext(lora_on_disk.filename)

            if shared.opts.lora_preferred_name == "Filename" or lora_on_disk.alias.lower() in lora.forbidden_lora_aliases:

                alias = name

            else:

                alias = lora_on_disk.alias

            yield {

                "name": name,

                "filename": path,

                "preview": self.find_preview(path),

                "description": self.find_description(path),

                "search_term": self.search_terms_from_path(lora_on_disk.filename),

                "prompt": json.dumps(f"<lora:{lora_on_disk.alias}:") + " + opts.extra_networks_default_multiplier + " + json.dumps(">"),

                "prompt": json.dumps(f"<lora:{alias}:") + " + opts.extra_networks_default_multiplier + " + json.dumps(">"),

                "local_preview": f"{path}.{shared.opts.samples_format}",

                "metadata": json.dumps(lora_on_disk.metadata, indent=4) if lora_on_disk.metadata else None,

            }