🐛 Fixes tile move bug (#366)

Closes #366. This issue was caused by item IDs not being regenerated after the previous move, causing the second part of the move operation (delete previous) to fail. It was fixed by calling regenerate item IDs after item removal

src/store.js

@@ -205,6 +205,7 @@ const store = new Vuex.Store({
           });
         }
       });
+      config.sections = applyItemId(config.sections);
       state.config = config;
     },
     [SET_THEME](state, theme) {