Intent external parser for specification syntax
Set manual as default value for test generation note
Manage the scenario test types

The scenario syntax could define also the type of the test that will
be generated. It exists four types :
* ui
* unit
* plugin
* manual

The syntax is :
Scenario: Name [Parent Story] @ui
A UI test will be generated for the scenario.
If no test type notation is added :
Scenario: Name [Parent Story]
The test type is considered as to be set to manual.
Clean checkstyle errors
Update test generators to match updates on specification model