Removed jsyeo's dev gems. Removed unused gems.
Get new relic to trace submit methods
Kill rubinus, use mri
Put pry and spring back.
This is to encourage a much sane dev env for newbies.
Enable GC profiler
move background job files to app/jobs
Merge pull request #127 from jsyeo/jsyeo-clean-up-gemfile

Removed jsyeo's dev gems. Removed unused gems.
Merge pull request #129 from jsyeo/jsyeo-use-mri

Kill rubinus, use mri
Merge pull request #128 from jsyeo/jsyeo-trace-submit

Get new relic to trace submit methods
remove used testing files
init new testing env
Merge branch 'development' of https://github.com/Coursemology/coursemology.org into reset-testing-env
using mysql2 gem for all env
Merge pull request #131 from wangqiang1208/reset-testing-env

testing/Reset testing env
fix exp_transaction_id not saved into grading
Merge branch 'development' of github.com:Coursemology/coursemology.org into development
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