Due to #62 and #133 changes which cause instability to the platform as the code logic is flawed
This PR revert those changes and will provide a stable release

This ticket also includes changes for WAR-1591
and necessary support for WAR-1074 to run correctly

With firefox version 47 and above, a geckodriver is needed in the local sys env path
https://github.com/mozilla/geckodriver/releases
Chrome needs chromedriver
https://sites.google.com/a/chromium.org/chromedriver/downloads

if geckodriver is needed, then selenium version needs to be 3.5 or above
https://github.com/mozilla/geckodriver#selenium
which means for Firefox 47 and above, warrior needs both geckodriver and selenium >= 3.5 to run
Chrome isn't affected

For geckodriver launched firefox
currently found that browser.capabilities dict has "browserVersion" instead of "version"
needs to handle this kind of key changes in warriorframework

Test files are updated in internal repo

Code is ready to be reviewed