RTIR had no real test of its search UI

This doesn't exercise any of the format or other parsing, but does at
least test picking a queue and a custom field, which is more than we
had and will hopefully tease out other incompatible trunk changes in the
future.
Update code to handle upstream's change in quotes

bestpractical/rt@3bef226f stopped quoting the name of the custom field
because it caused more problems than it ever solved.

This code should likely bring down core's support for TxnCF but that's
out of scope for this fix.
Merge branch '3.2/no-quotes-in-cf-search-attributes' into 3.2.0-releng