docs($sce): fix grammar
docs(directives): remove line numbers from code blocks
test(ngModelOptions): ensure input has focus in e2e tests

This was not failing on Travis or Jenkins but was reliably failing on my
local build.
chore(travis): update Chrome on SL to 34

For some reason, SL gives us Chrome 28 when no version is specified.
feat($compile): allow SVG and MathML templates via special `type` property

Previously, templates would always be assumed to be valid HTML nodes. In some cases, it is
desirable to use SVG or MathML or some other language.

For the time being, this change is only truly meaningful for SVG elements, as MathML has
very limited browser support. But in the future, who knows?

Closes #7265
chore(travis): use npm cache