Batch of ARTY failures 12/04/2013

New large set of test failures traceable to problems on item creation.  Fixed as follows:

First, made sure page is refreshed and appropriate category expanded in LHN, to make sure the test sees the new item.

After that, it variously failed depending on whether hitting a local, DEV, or TEST server.  It turned out the My Work checkbox was sometimes making the new item not appear in LHN, so the new item creation procedure is to make sure the box is unchecked.  New method created for this in Helpers.