"Need" column in crafting list

[dpintof]

Describe the bug
In the Crafting List page, when I put the mouse over the "Need" column it doesn't give me a description of said column. I had to search for what it means

Steps to reproduce the behavior:

1. Go to 'Add Decks' -> "Crafting List"
2. Hover "Need" column

Expected behavior
Should inform the user that the column means the expected number of packs required to complete the deck.