Fix #1071 - Add Unregister button to Dashboard

app/directives/challenge-tile/challenge-tile.jade

@@ -21,6 +21,7 @@
 
         .phase-action(ng-show="challenge.userAction", ng-switch="challenge.userAction")
           a.tc-btn.tc-btn-s.tc-btn-wide.tc-btn-ghost.submit(ng-switch-when="Submit", ng-href="{{challenge|challengeLinks:'submit'}}") Submit
+          a.tc-btn.tc-btn-s.tc-btn-wide.btn-danger.submit(ng-switch-when="Submit", ng-href="{{challenge|challengeLinks:'unRegister'}}") Unregister
           a.tc-btn.tc-btn-s.tc-btn-wide.tc-btn-ghost.submit(ng-switch-when="Appeal", ng-href="{{challenge|challengeLinks:'viewScorecards'}}") View Scorecards
           a.tc-btn.tc-btn-s.tc-btn-wide.btn-danger.submit(ng-switch-when="Appeal", ng-href="{{challenge|challengeLinks:'completeAppeals'}}") Complete Appeals
 
@@ -99,6 +100,7 @@
 
       .phase-action(ng-switch="challenge.userAction")
         a.tc-btn.tc-btn-s.tc-btn-wide.tc-btn-ghost.submit(ng-switch-when="Submit", ng-href="{{challenge|challengeLinks:'submit'}}") Submit
+        a.tc-btn.tc-btn-s.tc-btn-wide.btn-danger.submit(ng-switch-when="Submit", ng-href="{{challenge|challengeLinks:'unRegister'}}") Unregister
         a.tc-btn.tc-btn-s.tc-btn-wide.tc-btn-ghost.submit(ng-switch-when="Appeal", ng-href="{{challenge|challengeLinks:'viewScorecards'}}") View Scorecards
         a.tc-btn.tc-btn-s.tc-btn-wide.btn-danger.submit(ng-switch-when="Appeal", ng-href="{{challenge|challengeLinks:'completeAppeals'}}") Complete Appeals
 

app/filters/challengeLinks.filter.js

@@ -73,6 +73,8 @@ import _ from 'lodash'
           return String.supplant('https://software.{domain}/review/actions/ViewProjectDetails?pid={id}', data)
         case 'completeAppeals':
           return String.supplant('https://software.{domain}/review/actions/EarlyAppeals?pid={id}', data)
+        case 'unRegister':
+          return String.supplant('https://software.{domain}/review/actions/Unregister?pid={id}', data)
         }
       }
     }

assets/css/directives/challenge-tile.scss

@@ -248,6 +248,7 @@ challenge-tile .challenge.tile-view {
         .submit {
           margin: 12px;
           display: block;
+          text-align: center;
 
           &.btn-danger {
             color: #e66e66;
@@ -524,6 +525,7 @@ challenge-tile .challenge.list-view {
       .submit {
         display: block;
         margin: 6px 0;
+        text-align: center;
 
         &.btn-danger {
           color: #e66e66;