817 export data finals page

[c-jimmy1]

Issue

closes #817

Test Procedure
Example:

1. Open the final exams page and add some courses
2. Click search, and then on the bottom click export, and then click
3. Click Export Data, then export to ICS
4. Open Google Calendar, under other calendars, click the plus sign and click import

Photos

Before:

After:

Google Calendar:

Additional Info

The final exam year will default to the current year, as we only have one dataset for Finals.

[c-jimmy1]

New Updates

Added New Feature to the dropdown menu, Export to Image. This makes it consistent with the original page, allowing users to download a png. Also fixed the page extending when clicking the dropdown menu.

Images:
Image of website:

Image of downloaded image: