admin stats: add gender for users, confirmed email count for teachers
Merge branch 'master' of github.com:code-dot-org/dashboard
Rake task for getting ideal_solution.
Remove the migration.
Merge pull request #260 from nanan9177/blockly_fix

Rake task for getting ideal_solution.
Merge pull request #259 from nanan9177/feedback_collect

Adding add hint flow to the add hint page.
Made read pool same as write so we can kill extra db.
Get rid of cache bust if in development so break points work.
Remove terminated machines from deploy.
Remove terminated machines from sync_dash script.
Merge pull request #261 from code-dot-org/dev

Get rid of cache bust if in development so break points work.
Use env variables.
Adding frequent_unsuccessful_level_sources table, and the rake task that updates it.
Adding a infrequent task list for seed.rake.