Translate Python log messages + fix rhinopanel import in PROJECTS

- startup.py: all user-visible messages translated to English
- panel_base.py: icon/rendering log messages translated
- toolbar.py: display mode check messages translated
- Global: Panel registered/opened/listener-active across all modules
- Fix: elemente.py and other files with stale 'import rhinopanel'
  were missing from PROJECTS sync — now properly copied

rhino/wand_grips.py

@@ -354,6 +354,6 @@ def install_handlers():
         handler.Enabled = True
         sc.sticky[_STICKY_CONDUIT] = conduit
         sc.sticky[_STICKY_HANDLER] = handler
-        print("[WAND_GRIPS] Endpoint-Conduit + Mouse-Handler aktiv")
+        print("[WAND_GRIPS] Endpoint conduit + mouse handler active")
     except Exception as ex:
         print("[WAND_GRIPS] install:", ex)