Bug/general fixes (#450)

* Fix asset link

* remove unused var

* fix no meal-plan returned

* cleanup redundant code

* Fix dates off in UI

* quick set dark/light mode

* user image fixes

Co-authored-by: hay-kot <hay-kot@pm.me>

frontend/src/store/modules/userSettings.js

@@ -17,7 +17,7 @@ function inDarkMode(payload) {
 
 const state = {
   activeTheme: {},
-  darkMode: "light",
+  darkMode: "light", // light, dark, system
   isDark: false,
   isLoggedIn: false,
   token: "",