added attributes to job offers show and edit #5,#6
added datepicker, #5
added query turbo link, #5
save start and end date, #5
fixed error with empty value, #5
renamed end_time to end_date, description datatype to text, start_date & end_date type to date #5, #6
added attribute labels to show, added delete button, style show view, #5
adapt create/update style to view style, #6