Adding check on client side for empty searchterm (#821)

Author: ddey2

frontend/src/actions/metadata.js

@@ -94,6 +94,11 @@ export function deleteMetadataDefinition(metadataDefinitionId) {
 export const SEARCH_METADATA_DEFINITIONS = "SEARCH_METADATA_DEFINITIONS";
 
 export function searchMetadataDefinitions(searchTerm, skip, limit) {
+	if (searchTerm.trim() === '') {
+      // Search term is empty.
+      console.log('Please enter a search term');
+      return;
+    }
 	return (dispatch) => {
 		return V2.MetadataService.searchMetadataDefinitionApiV2MetadataDefinitionSearchSearchTermGet(
 			searchTerm,