add --loglevel commandline argument for logging

remove the progressbar for extension installation in favor of logging output

modules/initialize_util.py

@@ -1,5 +1,4 @@
 import json
-import logging
 import os
 import signal
 import sys
@@ -7,17 +6,6 @@ import re
 
 from modules.timer import startup_timer
 
-def setup_logging():
-    # We can't use cmd_opts for this because it will not have been initialized at this point.
-    log_level = os.environ.get("SD_WEBUI_LOG_LEVEL")
-    if log_level:
-        log_level = getattr(logging, log_level.upper(), None) or logging.INFO
-        logging.basicConfig(
-            level=log_level,
-            format='%(asctime)s %(levelname)s [%(name)s] %(message)s',
-            datefmt='%Y-%m-%d %H:%M:%S',
-        )
-
 
 def gradio_server_name():
     from modules.shared_cmd_options import cmd_opts