chore(build): add relase-after-cdn script
chore(build): check cdn before executing the release-after-cdn script
fix(docs): Clarifying versions of IE that need special fixes
fix(docs): Update reference to `$routeProvider.otherwise`
fix(docs): Add missing whitespace
feat(build): add a grunt test for running protractor tests extracted from the docs
docs(tutorial): improve experiment instructions

Closes #5697
feat(build): add a grunt test for running protractor tests extracted from the docs
test(docs): add protractor tests for docs app

Closes #5437