All Fields Data template creates a report about all the fields contained by the issues returned by the filter. It can be a project or a JQL.
The template files can be found in the "Attachments" section. You'll have to place the two SIL files in the SIL Manager and the .xlsx one in your JIRA_HOME directory, under the "/kepler/reports/All Fields Data" directory.
Next, configure a new entry in the SIL Excel Reporting Gadget and set the AllFields_ExecScript.sil as the execution script and the AllFields_ScreenParamsScript.sil as the parameter script.
The SIL Excel Reporting gadget configured with this template looks like this:
If running this template an Excel file is created and will look like this: