Cursing in the change list predates the standard cursor manager and thus
handled cursing manually. When the [enter] key handler was reworked to
defer to the browser's native focus (issue 7294) the enter key behavior
stopped working in change lists because the focus was not being set by
the cursor. With this change, change lists use the cursor manager that
is configured to set focus, allowing the [enter] key to safely work as
before without interfering with issue 7294.
Section query link URL generation is upgraded to use Gerrit.Nav.
Bug: Issue 7493
Change-Id: Ia70cf75a555b6aee54e2740fa653c1568eba1525
230e5fdaed