As discussed on pre-Eddi meeting.

Wonder why this suddenly is necessary...

Sanitized Level 6.
Added test data for publishing.
Removed Surefire stuff from pom.xml. It doesn't seem to be necessary and
it just makes a lot of noise.

One test in level 2 still needs a proper search term.

Level 7 is about publishing. It's still a little empty.

Level 6 is about slicing cubes.

Level 5 is about doing analyis.

This level is about DDI lookup.

Level 3 is about Banks.

Level 2 is about searching.