Also, add mass delete user with tickets

Instead of selecting the first enabled, visible, non datepicker field, just
use the new @autofucus HTML5 attribute to automatically select the
autofocused field

Use http::build_query instead of inline urlencode

Generalize how we show object/data preview. The url to get the preview is
now based on data-preview attribute on the element in question.

This patch adds support for automatic date and time formatting based on a
selection of locale. The locale can default to the system or user specified
language+locale, or can be elected separately. For instance, English
speakers can pick between US, GB, and many other English speaking locales.

This also removes the need of the %timezone table and uses the timezonedb
built into PHP 5.3+. User's can now select from a much longer list of
database and no longer need to deal with the DST checkbox.

Fixes https://github.com/osTicket/osTicket-1.8/issues/1277 and https://github.com/osTicket/osTicket-1.8/issues/1373

Names parsed from incoming emails are stored in the database as is. This
pull request addresses potential XSS vulnerability due to improper display
of unsanitized names. Going forward names will be scrubbed on create.

Show user status on the user listing table

Initial concept for user directory