Merge pull request #19 from JoshLankford/master

add employer signup/login & new employer DB field
(feat) first implementation of jwtSession check at the header checker.
(feat) 2nd iteration on the JWT verification.
(feat) jwtValidation in it's own file. adjusted employer settings as well.
(feat) github and linkedin logic now in place with JWTs
Merge pull request #20 from justinpinili/feat/jwtLoginLogic

GitHub and LinkedIn authorization now includes verification with JWTs
set emails to lowercase & draft landing
fix whitespace