Revert "Stop propagation on the 'load more' link in case app is doing their own thing"

This reverts commit 93000886b8a69aa9de4852464fb01f7f04f09cba.
Use 'onRun' ('load') instead of 'onBeforeAction' for some things

- Works better for c9d7894 (#44)
- https://github.com/EventedMind/iron-router/issues/624