Add test matrix
Downgrade jquery for testing IE testmatrix
Switch to data attribute
Merge branch 'master' into test_matrix

Conflicts:
	test_app/tests/helpers.py
	test_app/tests/test_ignored_metatag.py
	test_app/tests/test_no_pjaxr_response.py
	test_app/tests/test_pjaxr_request.py
Fix testcases
Update jquery test version to ~1.9.1
Fix jquery bower path
Reduce testmatrix for faster debugging
Fix for safari history workaround
Make chrome default testing browser