Description of problem:
If the user enters a character like "a" into the search field, then deletes it, an exception occurs.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. With a large (eg. production size) database to test on, enter "a" into the project search
2. Delete the character
javax.servlet.ServletException: UT000047: The number of parameters exceeded the maximum of 1000
Happens when the list of users returned by the "a" search is very large.
Issue cause by user search on top bar which we didn't limit the search result.
Verified at dedd1e9f0da49f4fbe9fe38861677d970fada27c