Feature/style unification (#420)

* set global icons

* fixes #419

* button style docs

* category/tag page updates

* dynamic router imports

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

frontend/src/components/UI/TheAppBar.vue

@@ -7,7 +7,7 @@
       </v-btn>
       <router-link to="/">
         <v-btn icon>
-          <v-icon size="40"> mdi-silverware-variant </v-icon>
+          <v-icon size="40"> {{ $globals.icons.primary }} </v-icon>
         </v-btn>
       </router-link>