Updated app.css sidebar easing
Updated app.css sidebar easing

Added transition to left-nav to ease sidebar back slowly.
MegaAlex/community-app,mbj36/community-app,openMF/community-app,mbj36/community-app,gkrishnan724/community-app,openMF/community-app,dtsuran/community-app,MegaAlex/community-app,openMF/community-app,mbj36/community-app,gkrishnan724/community-app,dtsuran/community-app,gkrishnan724/community-app,openMF/community-app,MegaAlex/community-app,gkrishnan724/community-app,mbj36/community-app,dtsuran/community-app