Add annotation filter to default filter group so it shows up in searc…

…h views unless explicitly omitted. Related to #1720 with the DataCatalogView/CatalogSearchView refactor.

src/js/models/AppModel.js

@@ -1637,6 +1637,13 @@ define(['jquery', 'underscore', 'backbone'],
               icon: "table",
               description: "Measurement type, e.g. density, temperature, species"
             },
+            {
+              fields: ["sem_annotation"],
+              label: "Annotation",
+              placeholder: "Search for class...",
+              icon: "tag",
+              description: "Semantic annotations"
+            },
             {
               filterType: "ToggleFilter",
               fields: ["documents"],