Add Node.From and Elements.from and optimization

Uses native createContextualFragment to parse html string if available.
http://jsperf.com/dom-create-vs-jquery/23


Fixed a bug (https://github.com/mootools/mootools-more/issues/1211) in
ie <9 where text nodes would not be returned by the function.
 I'm a naive child - my changes cause the bug :( --- This is a significant optimization however, useful for people parsing a ton of templates.