- Make sure to send the subdirectory when restarting a build

- Make sure to use the subdirectory to read the Dockerfile's location in a build package, and display the path
- Nicer UI for showing the trigger description in the build view
- Fix an NPE in the file change tree

static/partials/repo-build.html

@@ -40,7 +40,7 @@
       <div class="tab-content" onresize="adjustLogHeight()">
         <div ng-repeat="build in builds" class="tab-pane build-pane" ng-class="currentBuild == build ? 'active' : ''">
           <div class="alert alert-info" ng-show="build.trigger">
-            Triggered by: <span class="trigger-description" trigger="build.trigger" style="margin-left: 10px"></span>
+            Triggered by: <span class="trigger-description" trigger="build.trigger" short="true" style="margin-left: 10px"></span>
           </div>
 
           <div class="build-header">