add option to gui launcher to select gui

xsa_gui.py

@@ -6,6 +6,12 @@ if __name__ == "__main__":
     parser = ArgumentParser(description='search and download gui')
     parser.add_argument('--host', type=str, help='hostname or ip-address (including port).', default="http://localhost:8080")
     parser.add_argument('--user', type=str, help='user:passw', default=":")
+    parser.add_argument('--gui', '-g', type=str, default='gtk', choices=['gtk', 'web'], help="Choose which GUI you would like to launch. Default is GTK")
 
-    from xsagtk.xsa_app_main import start_xsa_gui
-    start_xsa_gui(parser.parse_args())
+    args = parser.parse_args()
+    if args.gui == "gtk":
+        from xsagtk.xsa_app_main import start_xsa_gui
+        start_xsa_gui(args)
+    elif args.gui == "web":
+        from xsaweb.main import start_web_gui
+        start_web_gui(args)