Comment 3 for bug 1422802

Adding a pullrequest for the branch at working/user/lp1422802-more-visible-parts.

Test plan:

* Without changing any settings, place a hold on a title with parts (records 84 and 53 in the Concerto database).
* The standard dropdown menu parts selector should be easier to see, with a bold heading and some padding around the selector.

* In config.tt2, change the enable.parts.radio setting to 'true'
* Place a hold on a title with parts.
* The parts selection should now display radio buttons instead of a dropdown menu. The options should line up well, and resizing the screen should move parts options to the next line without separating the labels from the inputs.
* If you don't select a part, you should be unable to submit the form and receive a message telling you to select an option.
   - to test the backup javascript method of validation you need to a) use a browser like Safari that doesn't support the required HTML5 attribute or b) remove the required attributes from the input tags in parts/place_hold.tt2
* After selecting a part and placing a hold, ensure that the hold was placed on the correct part.