Split test scenarios into separate pages, add legacy app skeleton

Split test scenarios into separate pages, add legacy app skeleton

Each test scenario (i.e. luc, legacy app, tsm) has been split into a
separate file.

Setup steps which have to be performed for every scenario are moved into
test-general-setup.xml

Cross-references are used so that the test overview links to each test
case, and the "Testing" page links to the general setup and also each
test.

test-example has been removed because it is no longer necessary.