Qt metrics v0.14: Autotest section refined in Project dashboard

Autotest section refined to be in synch both with Configuration
section in Project dashboard and with Autotest dashboard.
Section lists now only the significant Autotests for blocking
(non-insignificant) Configurations i.e. those that caused the
build to fail.

Change-Id: Iea2549a769c9379625a68f7912ac33413ca2e3f0
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@digia.com>