My panda level - add average grade feature#5

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jperezish wants to merge 3 commits intoRubyoffRails:masterfrom jperezish:master

+60-4

Commits on Dec 31, 2013

add new feature: teacher can view average grade
jperezish
committed

Commits on Jan 1, 2014

complete average grade feature, need to refactor test
jperezish
committed

Commits on Jan 3, 2014

update average grade code, update average grade test
jperezish
committed