add function show all Actors in a table

added entries of actors to test all the functions
removed content of award in view of actor

added function to show actor over table with all actors
added function to delete actor

changed log message of storage
added function to show all directors in table

changed function to edit and delete directors

linked all the function for the director

added some datasets for the director
changed function of dvd
added and changed function to add, edit and delete dvd; aim is to show
dvd in table;
complete dvd function

dvds now are shown in table; complete function to edit and delete dvd;