optimizations (#2904)

* calc once, then re-use
* prevent invalid theme switch
* allow to turn off weekly-quick-entries by permissions
* remove 00:00 from date-times that likely do not need a time
* fix datepicker out of window

package.json

@@ -48,5 +48,6 @@
   },
   "browserslist": [
     "defaults"
-  ]
+  ],
+  "dependencies": {}
 }