Readded edit button, fixed table alignment, extended open definition
Merge pull request #818 from UM-USElab/11-15-14-edit-grade

Readded edit button, fixed table alignment, extended open definition
student analytics now queries students
Merge pull request #820 from UM-USElab/analytics-adjustments

student analytics now queries students
AJ-2429 replace debugger with byebug in development for Ruby 2 support
AJ-2429 initial pass at consolidating requests for leaderboard
AJ-2429 Refactoring leaderboard controller code to improve performance
AJ-2429 Near-final SQL-query condensation improvements of leaderboard controller and related models
AJ 2429 further refactoring of leaderboard controller
AJ 2429 Further refactoring of info controller, rebuilding leaderboard queries to be User-based rather than CourseMembership-based for better consolidation.
AJ-2429 Finish condensing info controller and user model logic for cleanly fetching all course membership, team membership and user membership information in one query.
AJ-2429 Improving methods for selecting user teams and course badges with less overhead.
AJ-2429 Working implementation of leaderboard speed improvements. Still working but ready to test.
AJ-2429 Hack another 300ms out of leaderboard page load time
AJ-2429 Fix leaderboard badge issue for nil badges from Rollbar #739