[FIX] Remember showOnLogin flag during redirect to refresh the theme

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48341 b456876b-0849-0410-b77d-98878d47e9d5
[Fix] JS added to avoid appending multiple input fields on submit

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48342 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] Space replaced by '_' to avoid space in image url - Ref: http://dev.tiki.org/item4867.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48343 b456876b-0849-0410-b77d-98878d47e9d5