Fixed bug that happened when CEP wasn't spawned

Bug occurred when trying to display data when the CEP hadn't been spawned yet. UE doesn't crash anymore when this happens, updated code to just display data on cluster then output a message to the user that they need to spawn the CEP in order to view all of the data. Also updated variable initialization and validation in RAPS and both Frontier Data components. I will start a new branch to add QR code for CEP next.