add group model
add school, location, and its counter cache
Add agelevel, holder, school_summary
update annotates, add seedbank gem
seed general models
add group#publist
add password mailer, password mailer test
Add password request flow, and api doc

- Add request, reset action
- Add chinese mailer view
- The json response should be i18n
- add api doc
Merge pull request #7 from Bratops/0.1.4_const_model

Add common use constant model