Add scala compiler plugin and dependencies in a separate profile. And make all tests to run with JUnit Runner.
Merge remote-tracking branch 'origin/master'

Conflicts:
	pom.xml
	src/main/java/ro/jtonic/handson/scalatest/PersonDao.java
	src/main/java/ro/jtonic/handson/scalatest/Teacher.java
	src/test/scala/samples/fixture.scala
	src/test/scala/samples/persistence_service.scala
	src/test/scala/samples/scalacheck.scala