Make flashcards mobile friendly

[samuel-belcastro]

When using flashcards on a mobile device, the user is unable to click the card to flip it over. The user should be able to tap the card and view the other side.

Additionally, making the flashcards UX more mobile friendly can be beneficial, as it will be more useful to students who constantly use phones.

Ideas for Improvement:

1. When the user flips phone to landscape orientation, the flashcards become full screen
2. Tilting the phone (while in landscape orientation) will flip the card