Item10817: Use GET to validate wiki and login name

If the shorter URL's is misconfigured and the server redirects a
bin/view/System to /System,  the POST is redirected to a GET and the
jquery fails.  By making the original request as a GET, redirect is
handled and it works.

git-svn-id: http://svn.foswiki.org/trunk@12672 0b4bb1d4-4e5a-0410-9cc4-b2b747904278

TopicUserMappingContrib/data/System/DefaultUserRegistration.txt

@@ -277,7 +277,7 @@ jQuery(function($) {
 					wikiword: true,
 					remote: {
 						url: '%SCRIPTURL{view}%/%WEB%/%TOPIC%',
-						type: 'post',
+						type: 'get',
 						data: {
 							section: 'checkWikiName',
 							skin: 'text',
@@ -291,7 +291,7 @@ jQuery(function($) {
 					required: true,
 					remote: {
 						url: '%SCRIPTURL{view}%/%WEB%/%TOPIC%',
-						type: 'post',
+						type: 'get',
 						data: {
 							section: 'checkLoginName',
 							skin: 'text',