[FIX]Fix the second help url through another help icon

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@50521 b456876b-0849-0410-b77d-98878d47e9d5
a few more from the last screen of the installer

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@50522 b456876b-0849-0410-b77d-98878d47e9d5