Enforce .editorconfig by running eclint (#213)

* tune .editorconfig for the existing files
* fix reported linting issues
* travis: switch language to node_js to be able to run npm
* travis: build on ubuntu bionic

kwmserver/wrapper.sh

@@ -72,7 +72,7 @@ export registration_conf=/kopano/ssl/konnectd-identifier-registration.yaml
 # so the konnect container (since the startup is running as nobody) can write to it.
 exec dockerize \
 	-wait http://kopano_konnect:8777/.well-known/openid-configuration \
-        -timeout 360s \
+	-timeout 360s \
 	/usr/local/bin/docker-entrypoint.sh serve \
 	--registration-conf /kopano/ssl/konnectd-identifier-registration.yaml \
 	"$@"