Also fixed a few minor bugs and reworked Browser class to not use the constant
UNIT_TESTING so I could get the class to 100% coverage. Adds a dependency of
testing_helpers which I believe is available on Travis CI by default. Up to 75%
coverage, w00t w00t!
Geoff likes to exploit the URI and inject key/value pairs into it. It's not something I do, but I was intrigued enough to implement it. Basic usage is /path/to/page/id:123/spam:eggs. The variables are removed from the request variable as to not bork module loading and are made available via Browser::get('variable');
