Merge remote branch 'upstream/master'
Fixed Account dropdown effect after login
All title updated.
Add homepage tab script.
Merge remote branch 'upstream/master'

Conflicts:
	app/views/layouts/_header.html.erb
Fix header file caused by last merge
Prevent coach/student sign up once already signed in.
Coach display section finished
display 5 coaches on homepage instead of 4
merge deanmax 0413