Trim whitespace from batch reg CSV values
Trim whitespace from batch reg CSV values

Prevents confusing errors when there is, for example, a trailing space after an otherwise valid value.
Additionally, clarify some other code comments surrounding batch registration.

royragsdale/picoCTF,royragsdale/picoCTF,royragsdale/picoCTF,royragsdale/picoCTF,royragsdale/picoCTF,royragsdale/picoCTF,picoCTF/picoCTF,picoCTF/picoCTF,picoCTF/picoCTF,royragsdale/picoCTF,picoCTF/picoCTF,picoCTF/picoCTF,picoCTF/picoCTF