Please allow groups names to use any character, such as --, !, '

1. Create a group with the name !@!#@$#Y^%&&^(____#!@$@# http://next.dev.curriki.org/xwiki/bin/view/Group_-/
2. Go to Browse Groups by Subject http://next.dev.curriki.org/xwiki/bin/view/Groups/Browse?subject=FW_masterFramework.SocialStudies

Bug
The page is now broken. Allow those characters but masthead should treat them as non-wiki formatting characters. They need to be ignored.

Thanks.