Task Modal Improvements (#9560)

* start adding advanced options

* new imput

* partial colors

* update deps

* misc adds

* fix text color

* add advanced options

* initial reordering of task modal labels

* start to fix colors in the modal

* wip colors

* update package-lock.json

* fix merge

* finish modal

* refactor colors

* fix quick add

* fix colors

* new icon colors

* add markdown formatting help

* fix habits colors

* fix rewards colors

* fixed remaining colors

* start to inline inputs

* fix typ

* fixes

* habits hover state

* wip new task modal inputs

* bootstrap: upgrade to v4-beta3

* finish reward edit modal

* fix attributes allocation, checklists and add help tooltips for attributes and difficulty

* lots of fixes

* update datepicker

* misc fixes

website/client/components/challenges/challengeModal.vue

@@ -36,12 +36,12 @@
             :key="group.key",
             v-if='group.key !== "habitica_official" || user.contributor.admin'
           )
-            label.custom-control.custom-checkbox
+            .custom-control.custom-checkbox
               input.custom-control-input(type="checkbox",
-                :value='group.key',
+                :value="group.key",
+                :id="group.key",
                  v-model="workingChallenge.categories")
-              span.custom-control-indicator
-              span.custom-control-description(v-once) {{ $t(group.label) }}
+              label.custom-control-label(v-once, :for="group.key") {{ $t(group.label) }}
           button.btn.btn-primary(@click.prevent="toggleCategorySelect") {{$t('close')}}
       // @TODO: Implement in V2 .form-group
         label