[ENH] Bootstrap classes added to input type="reset". (".btn-warning" was used here, but which Bootstrap button class (meaning and color) to use with each Tiki button should be discussed and decided.) 

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@47520 b456876b-0849-0410-b77d-98878d47e9d5