Exit poll maps

[stellatsogtjargal]

• adds exit poll state and national maps (using EB maps) #119
• Greys out states that don't have any exit polls -- however, I didn't realize that not every state has different exit poll questions. (Will need to make a separate issue) #252
• switches out exit poll csv in nextjs public folder with the correct version (one from cleaned data)
• rest of the changes are cleaning up the EB files

Btw styling is still messed up -- made a separate issue for that