merge code from Phuong and make responsive for sign in page
add register page
Merge commit '5b7866ac152cc6a8fbcbe5016cedb7d339916aa3'

Conflicts:
	src/main/webapp/assets/modules/skill-analytics/skill-analytics.tem.html
Merge commit '0719dc0e48bd833362b0b03470b7a20c5fde2255'