define semester model
subjects <=> semesters habtm association
fine-tune service
add subject/fine-fix app
add tests of services/replace to test
Merge branch 'master' into test-service
fix markup
cope with bare json
remove log
fix service usage
fix unnecessary removal
Merge pull request #42 from endaaman/test-service

Test service
customize bootstrap
update markup
update style
use local font
refactor
update package.json
真・秘伝のタレ
Merge pull request #44 from endaaman/update-style

Update style