#120 #121 nav_list의 클릭 이벤트를 event delegation 방식으로 처리, bind()를 사용해보려고 했으나
실패해서 원상복구.
Add addEventListener on nav_list and theat it event delegation, Try to
use bind() but dosen't work.
Merge branch 'develop' of
https://github.com/NHNNEXT/2014-01-HUDI-ROLLINGPUPPY.git into develop

Conflicts:
	rollingPuppy/src/main/webapp/javascripts/main.js