Vim: update Command-T to post-1.10
Vim: exclude ".react" from expansion in "cc" JS snippet

If the filename is "Foo.react.js", we want to export "Foo" and not
"Foo.react".
Vim: add some trailing commas to React JS snippets

These methods will pretty much never be the last in a class (`render`
usually is) so we can safely include this.

(And not worried about IE anymore anyway, so would want trailing commas
everywhere anyway.)