CRM-13168 - RenderUtil - Fixes for IE8
jobtabapp/summary - Block & unblock UI like we do on every other screen
jobtabapp/pay - Display the system's default currency
jobtabapp/general - Don't allow toggling of disabled jobs as primary (unless all the jobs are disabled -- in which case would just be an historical correction)
Merge pull request #132 from civicrm/master-ie8-renderutil

jobtabapp - Misc fixes