Match templates' jQuery UI to primary template

The seldom used templates, "JohnsonFerrySingleCol_ArenaNav" and
"JohnsonFerry_ContentRight" had not had their jQuery UI loading
statements
updated to match the primary "JohnsonFerryMain_ArenaNav" template.

-Set the jQuery UI to 1.8.24
-Add custom jQuery UI theme
Make Event List use single jQuery UI

The EventRegistrationList module's dialog widget was not working when it

was placed on a page that also contained a module with the Arena
DataGrid
control in it. This was because the DataGrid control had an old version
of the jQuery UI hard-coded into it.

This solution involved placing the dialog code within a getScript()
function block. The getScript() function takes a specific script URL as
an argument, and uses that script when running its function.