Implement resume upload & netID verification

[andrewyang96]

Changes:

• Resume file upload
• netID verification complete
• Frontend form updated: changed names of some fields and made them all required

TODO:

• Frontend upgrades
• Upload resumes to AWS
• Implement Google reCAPTCHA. Use Founder's official Google account?

[andrewyang96]

@jbensal Going to merge this with master.