Generate bindings for HTMLTitleElement
Merge branch 'master' into title

Conflicts:
	src/components/script/dom/bindings/codegen/Bindings.conf
	src/components/script/dom/bindings/codegen/CodegenRust.py
	src/components/script/dom/bindings/node.rs
	src/components/script/dom/bindings/utils.rs
	src/components/script/dom/element.rs
	src/components/script/html/hubbub_html_parser.rs
	src/components/script/script.rc
auto merge of #684 : Constellation/servo/title, r=jdm

I've ported HTMLTitleElement webidl from mozilla-central.

https://groups.google.com/forum/#!topic/mozilla.dev.servo/2TzNkht_NMM/discussion
https://github.com/mozilla/servo/wiki/HTMLElement-binding-conversion