Fixing bug with tokenizer in ExtendedCountVectorizer.
Renaming domain filtering options in view.
Simplifying custom base command.
Reworking webpage_generator() in CrawledWebpageUtility.
Sorting domain names in classifier form.
Renaming CrawledWebpageUtility.webpage_generator() and deleting old implementation.
Reworking 1DNF management command.
Reworking Cosine-Rocchio management command.
Reworking NB management command.
Reworking Rocchio management command.
Reworking Spy management command.
Reworking EMNB management command.
Reworking SVM management command.
Updating date in README.