put mesh_control into user data

src/c3nav/mapdata/api/updates.py

@@ -31,6 +31,10 @@ class UserDataSchema(BaseSchema):
         title="control panel access",
         description="whether the user signed in can access the control panel.",
     )
+    mesh_control: bool = APIField(
+        title="mesh control permission",
+        description="whether the user signed in can manage the mesh.",
+    )
     has_positions: bool = APIField(
         title="user has positions",
         description="whether the user signed in has created any positions",

src/c3nav/mapdata/utils/user.py

@@ -13,6 +13,7 @@ def get_user_data(request):
         'logged_in': bool(request.user.is_authenticated),
         'allow_editor': can_access_editor(request),
         'allow_control_panel': request.user_permissions.control_panel,
+        'mesh_control': request.user_permissions.mesh_control,
         'has_positions': Position.user_has_positions(request.user)
     }
     if permissions: