Untangle FeatureLoader from Application.
Untangled outside-merc.application requirement on app.config, part 1.
Trim unnecessary imports from merc.application.
Move binding stuff to server.CurrentServer.
Make TLS bind-local.
Remove merc.application.server_name dependency.
Add feature-specific configuration.
Fix refactoring that didn't get commited before for some reason.
Employ different method for config checking by features.
Convert features to new feature config approach.
Merge branch 'refactoring'
Merge branch 'master' of github:merc-devel/merc