Publish Schedule

[bethgrace5]

The Schedules need to be "published" so that employees can only see schedules when they're ready to view. Right now, any changes made are immediately reflected in the schedule view.

• [x] Create a table in the database named schedule. As far as I can tell, it would need a column for the start date of the schedule, a flag for if it is published or not, and possibly a date updated for efficiency later.
• [x] When a user goes to view the schedule, and a row does not exist in the schedule table for it, They should see a message that says that the schedule is not ready to view. They should also not be able to click the next arrow again to go to another week.
• [x] When publish is clicked on the schedule edit view, a new row needs to be created in the schedule table. When the Schedule is saved, the schedule table needs to be updated with the date/time it was changed.

[amadorjoaosilva]

Instead of boolean "published" or "not published" have a date published