Make GET testAction default method.
Merge pull request #3187 from dereuromark/3.0-test-action

3.0 test action
Get all the connected routes list.
Test that RouterCollection::routes() gets the list of connected routes.
Rename RouterCollection::routes() to all().
Merge pull request #3188 from bar/3.0-all-routes-list

Get all the connected routes list.