feat(dropdown): change forceSelection default to false

This PR changes default value for forceSelection to false, because if you click into a dropdownfield and click outside again, the first dropdown value will be selected automatically which is probably not wanted in most cases so it shouldn't be the default.

If a select HTML field to be converted into a FUI dropdownfield got a required attribute, the forceSelection setting will be set to true again automatically

As this is a breaking change it is supposed to be part of 2.9

Author: lubber-de

src/definitions/modules/dropdown.js

@@ -422,6 +422,9 @@ $.fn.dropdown = function(parameters) {
                 module.debug('Disabling dropdown');
                 $module.addClass(className.disabled);
               }
+              if($input.is('[required]')) {
+                settings.forceSelection = true;
+              }
               $input
                 .removeAttr('required')
                 .removeAttr('class')
@@ -3991,7 +3994,7 @@ $.fn.dropdown.settings = {
   preserveHTML           : true,       // preserve html when selecting value
   sortSelect             : false,      // sort selection on init
 
-  forceSelection         : true,       // force a choice on blur with search selection
+  forceSelection         : false,       // force a choice on blur with search selection
 
   allowAdditions         : false,      // whether multiple select should allow user added values
   ignoreCase             : false,      // whether to consider case sensitivity when creating labels