Various fixes for new client (WIP) (#8953)

* sort equipment by stats: highest first

* spelling fix: excercise > exercise

*     change wording for login link on register screen

* remove incorrect Items heading from Quests Shop

*     fix missing "Recovery + Support Groups" guild category text and remove whitespace from keys

* fix text for guildInformationPlaceHolder

website/client/components/auth/registerLogin.vue

@@ -33,7 +33,7 @@
       small.form-text(v-once, v-html="$t('termsAndAgreement')")
     .text-center
       .btn.btn-info(@click='register()', v-if='registering', v-once) {{$t('joinHabitica')}}
-      .btn.btn-info(@click='login()', v-if='!registering', v-once) {{$t('login')}}
+      .btn.btn-info(@click='login()', v-if='!registering', v-once) {{$t('alreadyHaveAccountLogin')}}
       .toggle-links
         router-link(:to="{name: 'login'}", v-if='registering', exact)
           a.toggle-link(v-once) {{ $t('login') }}