[FIX] S5 presentations/slideshow: do not modify wikiplugin when nobody asked for it, added none option to select + fixes for https://dev.tiki.org/bug5169 (TODO: refactor duplicated code in tpl)

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@50391 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] fivealive theme: float any fluffy menu placed on the very top to the right by default

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@50392 b456876b-0849-0410-b77d-98878d47e9d5