Update bitstream-ordering.js

There is a bad JQuery selector in the following code. This causes a submit to take place each time an up or down arrow is clicked. It is difficult to see the error in the javascript console because the submit takes place immediately. 

Due to the page refresh delay, this is confusing to users when a large number of bitstreams are present. 

Note that "$^=" is not a valid selector. 

http://api.jquery.com/category/selectors/
Update bitstream-ordering.js

Found an additional scenario in which a javascript error occurs while re-ordering bitstreams.

Create an item with 3 original bitstreams.

Go to the edit bitstream screen and hit the down arrow on the second item.  An error will be thrown revealing a row without an id attribute.
Update JSPUI/XMLUI robots.txt to include SiteMaps and update Ant build process to use fill it out.
DS-2138 Discovery should get user's special groups (i.e. IPAuth)
XMLUI My Archived Submissions to sort using DB rather than array loop
DS-2180 Fix findBySubmitterDateSorted to work in metadata4all
add configurable visual indicators per item in browse and search results
fix compilation error after changes in master
Adding Collection.findAuthorizeOptimized

Based on Ohio State University code
Enable optimized selectcollection logic and add tests

You can run a standalone test via:
/dspace/bin/dspace dsrun org.dspace.app.util.OptimizeSelectCollection
Select Collection Optimize, add in community admin to check
Add missing license to OptimizeSelectCollection
fix comments and typos
fix issues and recommendations based on @zuki @lap82 comments
check for null values (in order to avoid NPEs due to incorrect configuration)
Merge pull request #679 from LongsightGroup/DS-2180-my-archived-submissions

DS-2180 Fix sorting by date accessioned in xmlui My Archived Submissions
Merge pull request #632 from LongsightGroup/DS-2138-discovery-ipauth

DS-2138 Discovery should get user's special groups (i.e. IPAuth)
Merge pull request #498 from tdonohue/DS-1936

DS-1936 - Update robots.txt to include a Sitemap entry
DS-2175 Citation PDF initial implementation
Hello World, get cover page working with PDFBOX