Description of problem:
If the same bug number is placed more than once into the bug ID list, the
update tool doesn't notice this and automatically trim out the duplicated
IDs.


Steps to Reproduce:
1.  Open a new fedora errata
2.  Review spec file changelog between last update and this update
3.  For every bug ID referenced in changelog, cut and paste into bug
    advisory field in update page
4.  Notice that some bugs have multiple changelog entries, and wonder
    wether or not the web cgi will automatically "sort | uniq" the bug
    IDs or not.
5.  Submit errata.

  
Actual results:
Fedora update tool does not automatically strip out duplicate bug IDs (or
sort them, which might be useful too).

Expected results:
That duplicate bug IDs are stripped out by the tool, as this makes it
easier for developers to just cut and paste all the bug IDs from rpm
changelog without having to visually trim out duplicates.

Bonus feature:
Make it sort the list of IDs after submission and dupe trimming.  ;)


Additional info:
The tool looks very nice, and is a vast improvement over our previous
manual process.  Keep up the fantastic work!