Fixed/enhanced scan job type selection process

* Appropriately set project and playbook to default when job type is set
  to 'scan' - #1273
* Add 'RESET' link on the Project label line to reset to Default
  project/playbook #858
* Fixed dropdown option clearing problem #1489
* Remember what project/playbook was set when switching from run/check
  to scan, so if you change back, those options will be auto-selected
  again

awx/ui/client/legacy-styles/forms.less

@@ -433,6 +433,10 @@ input[type='radio']:checked:before {
   outline:none;
 }
 
+.Form-inputLabelContainer {
+    width: 100%;
+    display: block !important;
+}
 .Form-inputLabel{
     text-transform: uppercase;
     color: @default-interface-txt;
@@ -443,6 +447,17 @@ input[type='radio']:checked:before {
     .noselect;
 }
 
+.Form-labelAction {
+    text-transform: uppercase;
+    //color: @default-interface-txt;
+    font-weight: normal;
+    font-size: 0.8em;
+    padding-left:5px;
+    float: right;
+    margin-top: 3px;
+    .noselect;
+}
+
 .Form-buttons{
     height: 30px;
     display: flex;