Merge pull request #952 from weseek/fix/search-with-tag-contain-upper-case

change datatype of tag_names on ES index

resource/search/mappings.json

@@ -95,7 +95,7 @@
           "format": "dateOptionalTime"
         },
         "tag_names": {
-          "type": "text"
+          "type": "keyword"
         }
       }
     }