Add a test name formatter and change nameFormatter to filenameFormatter

[pseudo-su]

• add testnameFormatter to manipulate the individual test names.
• rename nameFormatter to filenameFormatter.
• pass the karma test result to the formatter functions (I'm using this to add test suite information to the names so I don't get duplicate test names which sonar rejects).

[tornaia]

Thanks for your contribution, 0.0.5 released.