Requires cleanup, but works as intended.

- Add/remove "Groovy Users" who are assigned a location for which to
run reports
- Gutter button "Groovy Reporting" that links to a page where the user
runs an existing Groovy script as a report. User can select a
script/form and a date range.
- The Groovy script must be written to accept the following parameters:
"location", "fromDate", "toDate".
- User must have "Run Groovy Reports" and "SQL Level Access" priviliges.
- User must have been added as a "Groovy User" though the
Administrative page and assigned a location.