Disable Range tests.
Update expectations.
Update run.sh and run.py for changes to wptrunner.
Make wpt use mach-style logging by default.
Don't ignore errors in wpt/run.sh.
Make wpt run as part of make check.
Run wpt on Travis.
Remove the expected timeout for EventTarget-dispatchEvent.html.

The test only times out in debug builds, and our continuous integration runs
non-debug builds.
Expect an unexpected timeout in responsetext-decoding.htm.
Cleanup run.py and config.ini.
Remove assignments to args.metadata_root and args.tests_root in run.py.
Pin wptrunner to version 1.0.
Merge pull request #2942 from Ms2ger/run-wpt-2

Run web-platform-tests on Travis; r=jgraham+larsberg