Fix spacing between form group and checkbox

dashboard/src/components/MailboxDialog.vue

@@ -146,7 +146,7 @@ defineExpose({
             <div class="error-label" v-if="formError">{{ formError }}</div>
           </FormGroup>
 
-          <FormGroup style="padding-bottom: 10px;">
+          <FormGroup>
             <label>{{ $t('email.editMailboxDialog.owner') }}</label>
             <SingleSelect v-model="ownerId" :options="usersAndGroups" :searchThreshold="10" option-key="id" option-label="name"/>
           </FormGroup>

dashboard/src/style.css

@@ -126,6 +126,10 @@ a.pankow-breadcrumb-item {
   margin: 8px 0;
 }
 
+.pankow-form-group + .pankow-checkbox {
+  margin: 20px 0 8px 0;
+}
+
 .pankow-table-header-column {
   border-bottom-color: transparent;
 }