3 deprecation warnings

[paulkoegel]

when running the test suite:

DEPRECATION WARNING: Calling URL helpers with string keys controller, action is deprecated. Use symbols instead. (called from create at /Users/paul/p/kickerapp/repo/app/controllers/matches_controller.rb:29)
/Users/paul/p/kickerapp/repo/app/views/matches/_form.html.haml:34: warning: duplicated key at line 34 ignored: :data

DEPRECATION WARNING: Calling URL helpers with string keys controller, action is deprecated. Use symbols instead. (called from create at /Users/paul/p/kickerapp/repo/app/controllers/matches_controller.rb:29)

DEPRECATION WARNING: `#deliver` is deprecated and will be removed in Rails 5. Use `#deliver_now` to deliver immediately or `#deliver_later` to deliver through Active Job. (called from create at /Users/paul/p/kickerapp/repo/app/controllers/leagues_controller.rb:17)