(chore)- content for faculty help page
tests - Add some examples to home_controller
tests - Use guard gem for running tests automatically
Rename home_controller#me to home_controller#getting_started
tests - speed up RSpec by deffering garbage collection

https://makandracards.com/makandra/950-speed-up-rspec-by-deferring-garbage-collection
fix - Make calls to UserMailer only when running in production env
Create and save sparse User object in db if new user

home_controller#authenticate
refactor - Move authenticate and signout to sessions_controller
guard - Set default rspec exec command to `rspec -f doc`
refactor - Move home_con..#getting_started to registrations_con..#new
test - Update spec for Registrations controller
test - replace home_controller specs with corresponding shoulda_matchers
chore - Update all outdated gems
(bug fix)- backbone no longer supports reset event for collections
(bug fix)- backbone no longer supports chaining of functions
Merging master into spec

 specs

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