Merge pull request #40 from uf0/master

egont, filter, stream
ROUTINE DEBUG. Temporary commit
ROUTINE DEBUG
check log settings in your settings.py
Bug resolved, corpus after login is the last corpus created.
Deeep Test with metrics and even deeper logging.
Some performance improvement (tfidf function, similarity)
Pre release: streamgraph
add corpora managment, add streamgraphradio button, minor fixes