Test to ensure we are not changing any functionality
Extract out all data parsing logic in to data parser

this still passes the base test
Moving tests from core to data parser

also rewriting core build_document_set tests
Docs for data parser
Skeleton - happily runs now (without doing anything)

the problem was not having installed it for development...
Working query

also added day one response, second day response and both days response
for use in tests.

strip down things being set on collector class
Initial test of webtrends reports

Also outline of requirements in other tests
Correctly parse timestamp

loads in common with ga parse - create common parse object (incl for
convert to UTC?)

should be sending through other dates? see date in test_core:167
Tests for setting up request and parsing passed in start and end
Wip doing date ranges
Handling day ranges

need to think about hour, half hour, week, month etc.
readme for what is valid in webtrends

also tests data response.