Do not import same student more than once [1/1]

[Problem]
A single student could be imported more than once.

[Solution]
Check if the student is already in the current students list before adding.
Activate remove from current student list button [1/1]

[Problem]
The remove from current student list button does not do anything upon click.

[Solution]
Upon click, remove the student from the current student list.
Enable deleting of students [1/1]

[Problem]
Could not delete students.

[Solution]
Add button to entries in the import tab to delete students.
Removing excess logging [1/1]

[Problem]
Verbose tab change logging no longer needed.

[Solution]
Remove verbose logging.
Add toasting of importing to provide user feedback.
Create utility class that contains toasting utils.
Enable timer and timer reseting [1/1]

[Problem]
The current student's timer did not work.

[Solution]
Create a timer class and factory for the current students tab. Enable the reset button on the tab.