Fixed an issue with added positions if they didnt exist in the position table, and a bug after removing the last position for an employee then adding a new one.

Added the ability for you to check into a shift by passing the shift ID. If you sign in you should know who the employee is and what shifts they work that day. The methods sign you in if you sign in over five minutes early or over five minutes late, in which case you must talk to a manager and they should change your shift to the hours worked.
Also, added a function for calculating the number of hours worked.

Now supports position data. Made the made changes to some cases and methods to make distinctions between employees trained positions and positions in general.

Shifts now have a position field, that the schedule classes methods are updated to take positions and return position data.

Client now supports receiving position messages from the server. Cleaned bug that stopped timeOff requests from updating locally.

Server now supports methods for adding and removing positions to the database, including sending messages to the client for updating there local positions.

Added methods for added and removing positions for a given employee. Position information is also gotten when getting employee info.

Added functionality for availability and requesting time off to the app. The app needs at least one employee in the database to run. Make sure to open the sql file in the repo drop your current table and execute everything from "create database" to the end of the availability table.

Moved to new package for server files. Updated UserThread and DataBaseQuery to work with the both Availability and TimeOff classes.

New class for interacting with the TimeOff table in the database. Moved to new package for server files and updated the module-info.java file.

New class for interacting with the availability table in the database. Moved to new package for server files and updated module-info file.

Employees table now captures the email, phone number, isManager, and wage.
Shift table now captures the availability of the shift. Updated parsing so all employee and shift details are separated by commas.