Moved all methods from BaseModel to a new class ModelFeatures - negative features still missing
Fix bug
max vote methods in ModelFeatures class for positive documents
equal max rule documents score refatored to work both with positive and negative documents
'documents_highest_score_negative_adjectives' method refatored to work both with positive and negative documents
'documents_highest_score_positive_adjectives' refactored to work with both positives and negatives docs
'documents_equal_sum_positive_and_negative_adjectives' method refactored to work both with positives and negatives docs
'documents_highest_sum_negative_adjectives' method refactored to work with both positives and negatives docs
'documents_highest_sum_positive_adjectives' method refactored to work with both positives and negatives documents
'documents_equal_count_positive_and_negative_adjectives' method to work with both positives and negatives docs
'documents_highest_count_negative_adjectives' method refactored to work with both positives and negatives docs
'documents_highest_count_positive_adjectives' method refactored to work with both positives and negatives documents
'documents_equal_score_adjectives' changed method signature to fits into pattern