Removed warning in Edit main page and InMemoryFlashcardSet.java#102

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ThomasShimUoft wants to merge 2 commits intomainfrom

feature-edit-main-page

Commits on Dec 5, 2022

Removed all warnings in edit main page. Removed warnings in InMemoryFlashcardSet.java
ThomasShimUoft
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Commits on Dec 8, 2022

ArrayOutOfBounds error due to no window listener when editing in the search menu. I simply added an empty windowListener.
ThomasShimUoft
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