* Add `io.spring.nohttp` Gradle plugin into the build script and allow
it only on CI server, since it is going to parse every file
* Fix tests do not use `http` any more
* Fix `test.html` in the `mail` modules tests to exclude a Namespace for
OExchange XRD protocol
* Fix some files for new line in the end of file according Checkstyle
violations
65c884cec7