[MINOR] Refactor Percentile Chart for Assign, Bulk Assign and BalancerCluster

[MINOR] Refactor series aggregation
- Make min, max, 75%,95%,99% be together, "operationNum" metric separate show.

Author: chitin <chitin1027@gmail.com>

Closes #778 from chitin/seriesAggre.
diff --git a/eagle-hadoop-metric/src/main/webapp/app/apps/hadoop_metric/ctrls/overview.js b/eagle-hadoop-metric/src/main/webapp/app/apps/hadoop_metric/ctrls/overview.js
index dd7c3e9..4cf3e97 100644
--- a/eagle-hadoop-metric/src/main/webapp/app/apps/hadoop_metric/ctrls/overview.js
+++ b/eagle-hadoop-metric/src/main/webapp/app/apps/hadoop_metric/ctrls/overview.js
@@ -116,12 +116,12 @@
 							mergeMetricToOneSeries("MemoryUsage", [seriesObj["nonheap"], seriesObj["heap"]], ["nonheap", "heap"], storageOption, {areaStyle: {normal: {}}}),
 							mergeMetricToOneSeries("Master Averageload", [seriesObj["averageload"]], ["averageload"]),
 							mergeMetricToOneSeries("Ritcount", [seriesObj["ritcount"], seriesObj["ritcountoverthreshold"]], ["ritcount", "ritcountoverthreshold"]),
-							mergeMetricToOneSeries("Assign", [seriesObj["AssignNumOps"], seriesObj["AssignMin"], seriesObj["AssignMax"]], ["numOps", "Min", "Max"]),
-							mergeMetricToOneSeries("Assign Percentile", [seriesObj["AssignPercentile75th"], seriesObj["AssignPercentile95th"], seriesObj["AssignPercentile99th"]], ["75th", "95th", "99th"]),
-							mergeMetricToOneSeries("BulkAssign", [seriesObj["BulkAssignNum_ops"], seriesObj["BulkAssignMin"], seriesObj["BulkAssignMax"]], ["num_ops", "min", "max"]),
-							mergeMetricToOneSeries("BulkAssign Percentile", [seriesObj["BulkAssignPercentile75th"], seriesObj["BulkAssignPercentile95th"], seriesObj["BulkAssignPercentile99th"]], ["75th", "95th", "99th"]),
-							mergeMetricToOneSeries("BalancerCluster", [seriesObj["BalancerClusterNum_ops"], seriesObj["BalancerClusterMin"], seriesObj["BalancerClusterMax"]], ["num_ops", "min", "max"]),
-							mergeMetricToOneSeries("BalancerCluster Percentile", [seriesObj["BalancerClusterPercentile75th"], seriesObj["BalancerClusterPercentile95th"], seriesObj["BalancerClusterPercentile99th"]], ["75th", "95th", "99th"]),
+							mergeMetricToOneSeries("AssignOpsNum", [seriesObj["AssignNumOps"]], ["numOps"]),
+							mergeMetricToOneSeries("Assign", [seriesObj["AssignMin"], seriesObj["AssignMax"], seriesObj["AssignPercentile75th"], seriesObj["AssignPercentile95th"], seriesObj["AssignPercentile99th"]], ["min", "max", "75th", "95th", "99th"]),
+							mergeMetricToOneSeries("BulkAssignOpsNum", [seriesObj["BulkAssignNum_ops"]], ["num_ops"]),
+							mergeMetricToOneSeries("BulkAssign", [seriesObj["BulkAssignMin"], seriesObj["BulkAssignMax"], seriesObj["BulkAssignPercentile75th"], seriesObj["BulkAssignPercentile95th"], seriesObj["BulkAssignPercentile99th"]], ["min", "max", "75th", "95th", "99th"]),
+							mergeMetricToOneSeries("BalancerClusterOpsNum", [seriesObj["BalancerClusterNum_ops"]], ["num_ops"]),
+							mergeMetricToOneSeries("BalancerCluster", [seriesObj["BalancerClusterMin"], seriesObj["BalancerClusterMax"], seriesObj["BalancerClusterPercentile75th"], seriesObj["BalancerClusterPercentile95th"], seriesObj["BalancerClusterPercentile99th"]], ["min", "max", "75th", "95th", "99th"]),
 							mergeMetricToOneSeries("HlogSplitTime", [seriesObj["HlogSplitTimeMin"], seriesObj["HlogSplitTimeMax"]], ["HlogSplitTime_min", "HlogSplitTime_max"]),
 							mergeMetricToOneSeries("HlogSplitTime Percentile", [seriesObj["HlogSplitTimePercentile75th"], seriesObj["HlogSplitTimePercentile95th"], seriesObj["HlogSplitTimePercentile99th"]], ["75th", "95th", "99th"]),
 							mergeMetricToOneSeries("HlogSplitSize", [seriesObj["HlogSplitSizeMin"], seriesObj["HlogSplitSizeMax"]], ["Min", "Max"]),