FEATURE: Ability to clear a user's penalty history

You can do this manually if you want to allow them to reach TL3 without
their penalty history counting against them.

app/assets/javascripts/admin/controllers/admin-user-index.js.es6

@@ -103,6 +103,16 @@ export default Ember.Controller.extend(CanCheckEmails, {
     anonymize() { return this.get('model').anonymize(); },
     disableSecondFactor() { return this.get('model').disableSecondFactor(); },
 
+
+    clearPenaltyHistory() {
+      let user = this.get('model');
+      return ajax(`/admin/users/${user.get('id')}/penalty_history`, {
+        type: 'DELETE'
+      }).then(() => {
+        user.set('tl3_requirements.penalty_counts.total', 0);
+      }).catch(popupAjaxError);
+    },
+
     destroy() {
       const postCount = this.get('model.post_count');
       if (postCount <= 5) {

app/assets/javascripts/admin/templates/user-index.hbs

@@ -408,6 +408,21 @@
     </div>
   {{/if}}
 
+  {{#if model.tl3_requirements.penalty_counts.total}}
+    <div class='display-row clear-penalty-history'>
+      <div class='field'>{{i18n 'admin.user.penalty_count'}}</div>
+      <div class='value'>{{model.tl3_requirements.penalty_counts.total}}</div>
+      {{#if currentUser.admin}}
+        <div class='controls'>
+          {{d-button label="admin.user.clear_penalty_history.title"
+                     icon="times"
+                     action=(action "clearPenaltyHistory")}}
+          {{i18n "admin.user.clear_penalty_history.description"}}
+        </div>
+      {{/if}}
+    </div>
+  {{/if}}
+
 </section>
 
 {{#if currentUser.admin}}