FAL-241 support pagination

FAL-241

Add pagination controls to the frontend

Screenshots:

Test instructions:

• ensure the backend at backend-app-course-search!5 (merged) is installed and ready to go
• start the frontend
• navigate to the frontend and try some searches
• use the pagination controls and try to break them (click all the buttons, verify that buttons are disabled when they should be and that each button does what is expected)
• verify that you can navigate and click the buttons with the keyboard
• verify that the buttons are accessible (labels, etc.)
• verify that the buttons match the client designs (see FAL-241)

Reviewers:

• @eLRuLL