Enable 'drops' in pattern type select

src/module.ts

@@ -42,7 +42,7 @@ class GraphCtrl extends MetricsPanelCtrl {
   processor: DataProcessor;
 
   datasourceRequest: DatasourceRequest;
-  patterns: Array<String> = ['General approach', 'Peaks', 'Jumps', 'Drops'];
+  patterns: Array<String> = ['General approach', 'Drops', 'Jumps', 'Peaks'];
   anomalyTypes = []; // TODO: remove it later. Only for alert tab
   anomalyController: AnomalyController;
 

src/partials/tab_analytics.html

@@ -13,7 +13,6 @@
     <div class="gf-form-select-wrapper">
       <select class="gf-form-input width-12"
         ng-model="anomalyType.pattern"
-        ng-options="pattern as pattern disable when pattern !== 'General approach' for pattern in ctrl.patterns"
         ng-disabled="true"
       />
     </div>
@@ -128,7 +127,7 @@
     <div class="gf-form-select-wrapper">
       <select class="gf-form-input width-12"
         ng-model="ctrl.anomalyController.newAnomalyType.pattern"
-        ng-options="pattern as pattern disable when pattern !== 'General approach' for pattern in ctrl.patterns"
+        ng-options="pattern as pattern disable when (pattern !== 'General approach' && pattern !== 'Drops') for pattern in ctrl.patterns"
       />
     </div>