More tweak of the dashboard nav-bar

Signed-off-by: Henry Chen <hchen@vmware.com>
use a smaller png file for nav-bar background

Signed-off-by: Henry Chen <hchen@vmware.com>
Merge pull request #246 from Henry-CF/navbar

More tweak of the dashboard nav-bar
Merge pull request #247 from Chunjie/master

fix bug, both interview phone & location stored in db location field
give a striking prompt if candidate has no job assignment