dataset指标计算时保留小数，不取整

modules/normalization/normalization.go

@@ -43,7 +43,7 @@ func GetCompleteInitValue(issuesClosed int64, releases int64, developAge int64,
 	return setting.RadarMap.CompletenessIssuesClosed*float64(issuesClosed) +
 		setting.RadarMap.CompletenessReleases*float64(releases) +
 		setting.RadarMap.CompletenessDevelopAge*float64(developAge) +
-		setting.RadarMap.CompletenessDataset*float64(dataset/(1024*1024)) +
+		setting.RadarMap.CompletenessDataset*(float64(dataset)/(1024*1024)) +
 		setting.RadarMap.CompletenessModel*float64(model) +
 		setting.RadarMap.CompletenessWiki*float64(wiki)