Fixes regex InfluxDB queries intoduced in 1.6.0

Do not encapsulate regex with quotes in query string
Fix the way series names are displayed, do not use column name but
rather series names

src/app/services/influxdb/influxdbDatasource.js

@@ -68,7 +68,7 @@ function (angular, _, kbn) {
         }
         else {
 
-          var template = "select [[group]][[group_comma]] [[func]](\"[[column]]\") as \"[[column]]_[[func]]\" from \"[[series]]\" " +
+          var template = "select [[group]][[group_comma]] [[func]](\"[[column]]\") as \"[[column]]_[[func]]\" from [[series]] " +
                          "where  [[timeFilter]] [[condition_add]] [[condition_key]] [[condition_op]] [[condition_value]] " +
                          "group by time([[interval]])[[group_comma]] [[group]] order asc";
 
@@ -86,6 +86,10 @@ function (angular, _, kbn) {
             group: target.groupby_field_add ? target.groupby_field : '',
           };
 
+          if(!templateData.series.match('^/.*/')) {
+                  templateData.series = '"' + templateData.series + '"';
+          }
+
           query = _.template(template, templateData, this.templateSettings);
           query = filterSrv.applyTemplateToTarget(query);
 
@@ -112,12 +116,11 @@ function (angular, _, kbn) {
     };
 
     InfluxDatasource.prototype.listColumns = function(seriesName) {
-      return this.doInfluxRequest('select * from "' + seriesName + '" limit 1').then(function(data) {
+      return this.doInfluxRequest('select * from /' + seriesName + '/ limit 1').then(function(data) {
         if (!data) {
           return [];
         }
 
-        return data[0].columns;
       });
     };
 
@@ -229,7 +232,7 @@ function (angular, _, kbn) {
             datapoints[i] = [metricValue, groupPoints[i][timeCol]];
           }
 
-          seriesName = alias ? alias : key;
+          seriesName = alias ? alias : series.name;
 
           // if mulitple groups append key to alias
           if (alias && groupByField) {