When opening a dropdown menu with a large amount of options, the menu doesn't force the page to scroll.

CoS:

1. Four reports are affected: Version Report, Sprint Report, Sprint Burndown, Epic Report
2. Control uses auto-complete, single select style
3. No grouping of select options

Dev Notes
Q: Is the frother case-insensitive?
A: yes

Q: Does it search on spaces or any single char?
A: Spaces no. Any character yes.

Q: What happens when an invalid string is typed in? Can we do other actions?
A: No Matches message, if you try to submit an invalid value it should revert to the previous selection

Q: What happens when you search on closed/archived sprints/versions?
A: same options show up as we had previously

Q: Can you search as an anonymous user?
A: same options show up as we had previously

Q: Is the input XSS-safe?
A: yes

Q: How long can the input be?
A: no limit, if it doesn't match then we revert to the selection

Q: Are there tests to update?
A: Epic and Version Report qunit tests are updated to reflect the changes