Add coinffeine-test module and a first acceptance test

**Description:** add a module for acceptance testing and the skeleton of a first test as discussed by mail.
At this point the test doesn't test anything as important production code interfaces (their cake factories) and testing support code are missing. The idea is to add the missing code class by class until making the acceptance test to pass.
**Testing:**
```
[info] QuoteTest:
[info] Query price quote
[info] - Scenario: no previous bidding or betting !!! IGNORED !!!
[info] - Scenario: previous bidding and betting !!! IGNORED !!!
[info] Passed: Total 2, Failed 0, Errors 0, Passed 0, Skipped 2
```