Adds grant and revoke moderation buttons so admins can make users moderators

app/assets/javascripts/admin/models/admin_user.js.coffee

@@ -17,6 +17,19 @@ window.Discourse.AdminUser = Discourse.Model.extend
     @set('can_revoke_admin',true)
     $.ajax "/admin/users/#{@get('id')}/grant_admin", type: 'PUT'
 
+  # Revoke the user's moderation access
+  revokeModeration: ->
+    @set('moderator',false)
+    @set('can_grant_moderation',true)
+    @set('can_revoke_moderation',false)
+    $.ajax "/admin/users/#{@get('id')}/revoke_moderation", type: 'PUT'
+
+  grantModeration: ->
+    @set('moderator',true)
+    @set('can_grant_moderation',false)
+    @set('can_revoke_moderation',true)
+    $.ajax "/admin/users/#{@get('id')}/grant_moderation", type: 'PUT'
+
   refreshBrowsers: ->
     $.ajax "/admin/users/#{@get('id')}/refresh_browsers",
       type: 'POST'

app/assets/javascripts/admin/templates/user.js.handlebars

@@ -84,6 +84,21 @@
   <div class='display-row'>
     <div class='field'>{{i18n admin.user.moderator}}</div>
     <div class='value'>{{content.moderator}}</div>
+    <div class='controls'>
+      {{#if content.can_revoke_moderation}}        
+        <button class='btn' {{action revokeModeration target="content"}}>
+          <i class='icon icon-eye-close'></i>
+          {{i18n admin.user.revoke_moderation}}
+        </button>
+      {{/if}}
+      {{#if content.can_grant_moderation}}
+        <button class='btn' {{action grantModeration target="content"}}>
+          <i class='icon icon-eye-open'></i>
+          {{i18n admin.user.grant_moderation}}
+        </button>
+      {{/if}}      
+    </div>
+    
   </div>
   <div class='display-row'>
     <div class='field'>{{i18n trust_level}}</div>