Cleaned up code

Traceback function in NW Removed Sentence and Gap imports in NW Removed Gap class Removed csv import in filereader Removed correctly shadowed function in alignment strategy Changed order docstring in analyze function in Dutchphonetics Renamed checklengths to check_lengths in Dutchphonetics Renamed sound to sounds in update_ambiguous function in Dutchphonetics Removed ambiguous keyword that was obsolete in update function in Dutchphonetics Removed getters and setters in controller as they were only changed within the class. Made analyse mistakes in Mistake_counter private Changed import to important in MistakeEnum Removed print for NW function in Mistake finder Removed other print statements in Mistake finder Removed shadow tasks setter and getter in Model Changed all “condition” to “assignment in Model, Shadow_task and statistics Removed print statement in statistics Removed time_to_int and to_hour_format in Utils Made the paths uppercase such that it is not case sensitive in Utils’ id and shadow regex functions. Made some methods private that could be private in View Removed print stats function in words classes