added a create method to gift model
fixed a syntax error in gift.rb
added a challenges scaffold
added some empty methods for challenges
added challenges skeleton and updated gemfile
changed giver and recipient to Giver and Recipient in challenges
added some gift creation unit tests
fixed a syntax error in tests
making gifts passes preliminary tests
added fixes to gift.rb and something changed Gemfile.lock idk what
challenge tests run and fail
creating a challenge passes weak unit test
Angular version has been updated to latest.

I also moved the relevant files to the vendor folder--bettter to have them in an non-modifiable directory.
Write login and add in users controller
Write methods in users controller
update users controller