Possibility of modifying the column names and image display in report

I added a drupal_alter call at the end of the function that builds the report data. This will allow other modules to modify both headers and rows in several ways. They'll just have to implement module_webform_report_data_alter(&$data).

I don't have a problem with this - but, can we just call the hook 'webform_report' - since it is the only one? And add a bit of doc...

// allow report data to be altered through a module
// module must implement a {module}_webform_report_alter(&$report, $node) function
drupal_alter('webform_report', $report, $node);

Doc added and type simplified.

Thanks ;)

Thanks. Pushed to repo.