Make workflowtype key more descriptive

Instead of using 0 and 1 for PromptSkims and Tier1Promptreco,
use the strings "PromptSkim" and "T1Reco" as identifiers

src/couchapps/WorkloadSummary/views/outputDataByPrimDs/map.js

@@ -3,16 +3,18 @@
  * Run<runnumber>-<PrimDs>-<ProcessedDataset>-Tier1PromptReco-<GUID>
  * Run<runnumber>-<PrimDs>-<ProcessedDataset>-<SkimName>-<GUID>
  * It returns them with the following key:
- * [<PrimDs>,<isTier1Reco>, <runnumber>]
- *
+ * [<PrimDs>,<WorkflowType>, <runnumber>]
+ * The possible workflow types are:
+ *    T1Reco for the first pattern
+ *    PromptSkim for the second pattern
  */
 function(doc) {
     var regexp = /^Run(\d+)-(\w+)-(\w+)(-\w+)?-v(\d+)-(\w+)/;
     var match = doc._id.match(regexp);
     if (match && match.length == 7){
        var runNumber = parseInt(match[1]);
        var primDs = match[2];
-       var isReco = (match[4] != null) ? 0 : 1;
+       var isReco = (match[4] != null) ? "PromptSkim" : "T1Reco";
        emit([primDs, isReco, runNumber], null);
     }
 }