Sub-string and multiple field searches for Requester search in work orders

The Work Order Requester search box strictly searches for Full Name or userid. When typing only a last name it will not find the results. You also cannot search based on email address. This causes us to always have to click the icon next to the text box to perform a detailed/advanced search to find the appropriate person, which is cumbersom and not much better.

Here is a search for the just the last name "watson", it doesn't show results for anything but one user who has a username of watsona

Here is a search for the full name "Margaret J Watson". If you search "Margaret Watson" it cannot find it. We therefore have to know the exact full name of the person to make this search box any bit useful.