Add defcon1 banner

Fixes #771

static/directives/repo-view/repo-panel-tags.html

@@ -18,6 +18,13 @@
 
  <!-- Normal View -->
  <div ng-show="!showingHistory">
+   <div class="co-alert co-alert-danger" ng-if="hasDefcon1">
+     One or more of your tags has an <strong>extremely critical</strong> vulnerability which should be addressed immediately:
+     <a href="{{ vuln.Link }}" ng-repeat="(key, vuln) in defcon1" style="margin-left: 10px;" target="_blank">
+       {{ vuln.ID }}
+     </a>
+   </div>
+
    <div class="co-check-bar">
      <span class="cor-checkable-menu" controller="checkedTags">
        <div class="cor-checkable-menu-item" item-filter="allTagFilter">