added method docstring
refactored tracker and related tests to improve initialization flexibility
refactored tracker and related tests to improve initialization flexibility around excluding paths setting on pyramid configuration ini
added docstrings to recently added methods
changed default valued for an url not found on storage.load method to be an empty dict, not defaultdict(list)
improving tests and implementation for views details registration
fixed bug with old code left there after refactoring (copy and paste junk)
fixed stupid bug that was resetting tracker excluded_path to None when exclude_paths method was called
improving error handling when call is not recognized when handling a response
fixed bug that was causing route stats to be reset every pyramid app restart
tweaking report page layout