Umbrella issue for any bugs associated with whitespaces in usernames
SpaceKeyParameter could not parse space keys containing spaces (personal spaces)
User directory sync fails on group name with control character (^Z)
Finding users using userpicker.action on systems with spaces in the user name causes unwieldy results
Auto-complete feature in the page restriction should include group names
Search for users in Administration (with LDAP) dont understand space
Inconsistent validation of usernames between admin-added and public signup
On external repositry import, username and groupnames should be trimed if spaces exists before or after the name.