add request functionality, enable select all, fix email autofill
Merge commit 'c5ff82f057c890188d0219ca15e625ff86e242b3'

* commit 'c5ff82f057c890188d0219ca15e625ff86e242b3':
  Updated Readme
  Instructor tests
  Fixed errors with paperclip that came from updating
  Update rails and gems
  Project spec tests
  Sponsor preferences tests
add project_open in session helper to check if project available to apply or not.
Add solution table to the database where to store the solution of team assignment
add email deliver to team task creation, fix bugs in event/task show