send form when pressing enter

pdb-ui/src/main/resources/resources/js/search.js

@@ -3,6 +3,12 @@ $(document).ready(function(){
 
 	$('#search-submit').click(plot);
 	
+	$('#search-input').keypress(function(e) {
+        if(e.which == 13) {
+            plot();
+        }
+    });
+	
 	renderGroupBy();
 	updateSearchLimitValue();
 	

pdb-ui/src/main/resources/templates/main.html

@@ -20,6 +20,7 @@
 			data-autocomplete-empty-message="nothing found" />
 	</div>
 	<div id="search-bar">
+		<form>
 			<label for="search-group-by-1">Group By:</label> 
 			<select id="search-group-by-1"></select>
 			<select id="search-group-by-2"></select>
@@ -61,6 +62,7 @@
 			</select>
 			
 			<button id="search-submit"><i class="fa fa-area-chart" aria-hidden="true"></i> Plot</button>
+		</form>
 	</div>
  
 	<div id="navigation">