GUACAMOLE-630: Do not contain entire field nor entire header within <label>.

Enclosing the entire field within the <label> results in problems when
the field is large and when the field contains multiple interactive
elements. Clicking within interactive elements of a complex field
triggers the <label>, refocusing the first input element. If the field
is large, the <label> will contain empty space which also refocuses the
input field upon being clicked, despite appearing to be the background
of the page.

guacamole/src/main/webapp/app/form/controllers/textFieldController.js

@@ -35,6 +35,6 @@ angular.module('form').controller('textFieldController', ['$scope', '$injector',
 
     // Generate unique ID for datalist, if applicable
     if ($scope.field.options && $scope.field.options.length)
-        $scope.dataListId = $scope.field.name + '-datalist';
+        $scope.dataListId = $scope.fieldId + '-datalist';
 
 }]);