Split Commons Test module in 2 and rationalize its usage

We need to split Commons Test in 2 because currently commons test depends on 6 other modules and as a consequence these 6 other modules cannot use any code from our testing setup/framework. Thus the idea is to have 2 modules: one for simple tests that don't require testing components and another one for testing components.

Also review and fix all dependencies on Commons Test and on JUnit/JMock so that modules don't depend on them and instead always depend on Commons Test.

Also remove all logback.xml and logback-test.xml that are a bit everywhere since we need only one in commons test