Fix/ensure exit fail on timeout

[krampstudio]

• Fix the exit code when a test fails in timeout
• Run all tests even if one is in timeout
• Adapt the display in case of test in timeout

How to test :

• npm test
• Within a repository that has tests that fails or in timeout (async not done)

[btamas]

Looks good, but if you run with verbose report, the timeouted test has no result.
Run this: node ./bin/qunit-testrunner.js -vvvv

Previously:

exampleTest/timeoutTest/test.html
{ Error: Test run could not finish in 30000ms
    at runQunitPuppeteer.then.catch.e (/Users/tamasbesenyei/work/tao-qunit-testrunner-fe/src/testrunner.js:96:27) path: 'exampleTest/timeoutTest/test.html' }

Now:

exampleTest/timeoutTest/test.html