[DOC] Move docs on built in Route actions back into the Route documentation
[BUGFIX] sync router.js: es3-safe `promise.catch()`
Merge pull request #4075 from bmac/move-built-in-actions-back-to-route

Move docs on built in Route actions back into the Route documentation
Merge pull request #4077 from machty/es3-catch

[BUGFIX] sync router.js: es3-safe `promise.catch()`