Enable touch events for IE 10&11
Merge branch 'master' of https://github.com/code-dot-org/blockly-core
minor updates for enabling touch in IE after review
Merge pull request #27 from tobyk100/master

Some fixes to make blockly core validate better, nothing functionally di...
Merge pull request #26 from safihamid/master

Enable touch events for IE 10&11 and surface
Give IE11 conditional branch precedence over IE10 branch. Small style changes.