apply PR AUTOMATIC1111#148 again and conditionally apply COMMANDLINE_ARGS

Author: wkpark

webui-user.bat

@@ -3,6 +3,9 @@
 set PYTHON=
 set GIT=
 set VENV_DIR=
+
+if not defined COMMANDLINE_ARGS (
 set COMMANDLINE_ARGS=
+)
 
 call webui.bat

webui.bat

@@ -4,6 +4,10 @@ if not defined PYTHON (set PYTHON=python)
 if defined GIT (set "GIT_PYTHON_GIT_EXECUTABLE=%GIT%")
 if not defined VENV_DIR (set "VENV_DIR=%~dp0%venv")
 
+if exist webui.settings.bat (
+    call webui.settings.bat
+)
+
 set SD_WEBUI_RESTART=tmp/restart
 set ERROR_REPORTING=FALSE