adde has many through relationship between students-enrollments-courses
graphs gem
added test data set
merged
added model methods for course and student to return arrays of names and grades
WIP: graph hash
updated to master-level updatednusness
WIP: metrics controller, graphs
metrics
fixed merge conflicts
added new tables for series and graphs
fixed migrations, added array fields
graphs controller working
added new show view, removed old show, created join table between graph and series
got up to date, fixed mad merge conflicts
added lazy_high_charts plugin
deleted create graph series
merged and up-to-date
added link to metrics main page in user_courses index view
changed series tables to plot tables, added test code to graphs