Enable GC profiler
move user exp & level update out of async thread
refactor level searching alogrithm in updating user exp
Merge pull request #133 from wangqiang1208/dev/fix_exp_update_after_grading

fix exp update after grading
Remove new relic from test group
Add travis configs
Add facebook config to travis build
Can't exclude new relic from test as we are using the method tracer in our initializers.
s/newrelic/newrelic_rpm/
Merge pull request #134 from jsyeo/jsyeo-gc-stats

Enable GC profiler
Merge pull request #135 from jsyeo/jsyeo-travis-config

Add travis configs
Fix lesson plan broken bug after new milestone
Merge pull request #139 from wangqiang1208/dev/lesson_plan_fix

Fix lesson plan broken bug
Merge branch 'development' of github.com:Coursemology/coursemology.org into Deploy
precompiled assets