Fixed ordering of scrape targets.
Added detection of SOLUS data integrity errors
Merge branch 'develop' of github.com:ChrisCooper/QcumberD into develop
Upgrade requests (for https://github.com/kennethreitz/requests/issues/1036).
Upgrade lxml (older version has issues with some poorly formatted pages)
Merge branch 'develop' of github.com:ChrisCooper/QcumberD into feature/textbook_scrape