Initial higher-level API for functional test with Python
single browser tests now use the new api
synced with python-functest-api
polishing the API
removed no more necessary tearDownClass
removed redundant comments
readding browser_test module; renaming assert methods
addressed remaining comments from @dmose
Merge pull request #2 from n1k0/python-functest-api

Higher-level API for writing functional tests using WebDriver & Python