Created an Angular slider directive to support JQueryUI slider widget. Job Template page now uses a slider for Forks value. User can set the value with the slider or type in a value btwn 0 and 100. Additionally turned verbosity into a drop-down.

ansibleworks/ui/static/css/ansible-ui.css

@@ -352,4 +352,11 @@
 
  #tree-view {
     min-height: 100px;
+ }
+
+ .slider {
+    display: inline-block;
+    vertical-align: middle;
+    width: 100px;
+    margin: 0 10px;
  }