General: show age separately (days, active days, %).

gitstats

@@ -525,7 +525,8 @@ class HTMLReportCreator(ReportCreator):
 		f.write('<dt>Project name</dt><dd>%s</dd>' % (data.projectname))
 		f.write('<dt>Generated</dt><dd>%s (in %d seconds)</dd>' % (datetime.datetime.now().strftime(format), time.time() - data.getStampCreated()))
 		f.write('<dt>Generator</dt><dd><a href="http://gitstats.sourceforge.net/">GitStats</a> (version %s)</dd>' % getversion())
-		f.write('<dt>Report Period</dt><dd>%s to %s (%d days, %d active days)</dd>' % (data.getFirstCommitDate().strftime(format), data.getLastCommitDate().strftime(format), data.getCommitDeltaDays(), len(data.getActiveDays())))
+		f.write('<dt>Report Period</dt><dd>%s to %s</dd>' % (data.getFirstCommitDate().strftime(format), data.getLastCommitDate().strftime(format)))
+		f.write('<dt>Age</dt><dd>%d days, %d active days (%3.2f%%)</dd>' % (data.getCommitDeltaDays(), len(data.getActiveDays()), (100.0 * len(data.getActiveDays()) / data.getCommitDeltaDays())))
 		f.write('<dt>Total Files</dt><dd>%s</dd>' % data.getTotalFiles())
 		f.write('<dt>Total Lines of Code</dt><dd>%s (%d added, %d removed)</dd>' % (data.getTotalLOC(), data.total_lines_added, data.total_lines_removed))
 		f.write('<dt>Total Commits</dt><dd>%s</dd>' % data.getTotalCommits())