Added get_common_info_ratings with corresponding tests.
Improved globalNetwork, fixed bugs.
Added primitive functionality to get_extreme_info_ratings
Restored newest versions of algorithms-files
Updated get_extreme_info_ratings plus some tests.
get_extreme_info_ratings added with desired functionality.
request_scrape works
Added numpy to requirements
Reworked node lookup
merge?

Merge branch 'algorithms' of https://github.com/mvk-team42/Veracitor into algorithms
Added numpy to requirements
get_max_rating_difference now working. Bundled with tests.
Moved around some code in globalNetwork as information objects aren't supposed to be in the graph as of now.
Merge branch 'database'

Updating master with the latest database functionality.
fixed imports and stuff
Merge pull request #18 from mvk-team42/master

Merge master to algorithms
celery task??
Merge branch 'master' of https://github.com/mvk-team42/Veracitor
Merge branch 'master' of github.com:mvk-team42/Veracitor into web
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