Require newer Email::Address::List to prevent denial of service

Email::Address::List contained a regular expression which was
susceptible to a quadratic-time increase in runtime on some
incorrectly-formed strings; this allowed constructed emails to subject
RT to a denial-of-service attack.  Require a newer version of the
module, which alters the regular expression to no longer contain such a
pessimized case.

This resolves CVE-2014-1474.
keep "add principal" input be focused when it's been clicked

when clicking the "add principal" input (e.g. #AddPrincipalForRights-group),
anchor will be synced to #acl-AddPrincipal, but the input focus will be lost
too(at least on firefox).
MySQL 4.1 notes are irrelevant for RT 4.2 docs
Add parameter 'ShowBody' to Default callback in ShowTransaction

This parameter's value is a reference to the ShowBody scalar. The
reasoning behind the addition of this parameter is to allow the callback
to have control over the displaying of the Txn body.
Add Table parameter to callbacks of ShowCustomFields

Since this component gets rendered differently based on the value of the
argument $Table, it would be nice to give the same info to the
callbacks.
add BeforeMessageBox to ModifyAll.html for consistency

Both Ticket/Create.html and Ticket/Update.html have a callback before
their respective message boxes. ModifyAll.html should as well.
Merge branch 'security/4.2/email-address-list' into 4.2-trunk
Merge branch '4.2/admin-rights-add-principal-input-focus' into 4.2-trunk
I#28739: ScripStage leaks internal value

Display Normal and Batch (and with disabled tag) instead of
TransactionCreate and TransactionBatch in Queue's ColumnMap.

Addtionally, factored the mapping out into RT::Scrip so that
we could have a single place for this logic to be used both
from form dropdown and collection listing.
Stop mentioning QuickDelete, as it was last useful and working in 3.8
Switch to more canonically useful example plugins
Suggest Plugin() in RT_Config.pm

Fixes I#29978
Ensure that @Plugins defaults to an empty list -- absent a Set(), it defaults to (undef)
Merge branch '4.2/scripstage-queue-columnmap-i18n' into 4.2-trunk