Juha Palomäki, juhap at iki.fi, http://juhap.iki.fi
This is a custom Zendesk widget for JIRA. It is based on the Zendesk JIRA template, but adds support for specifiying priority for the issues. Priorities are fetched from JIRA.
In order to use this, follow the configuration instructions on Zendesk support pages: https://support.zendesk.com/entries/202332-jira-integration-creating-a-custom-widget