Small index page improvement
Small index page improvement

Change-Id: I465d5382afd0f2feb71fb8e66b2ab8eb6f704872
DocImpact: index page improved

bigfootproject/sahara,zhangjunli177/sahara,mapr/sahara,crobby/sahara,rnirmal/savanna,xme1226/sahara,redhat-openstack/sahara,bigfootproject/sahara,xme1226/sahara,bigfootproject/sahara,henaras/sahara,mapr/sahara,zhujzhuo/Sahara,openstack/sahara,matips/iosr-2015,citrix-openstack-build/sahara,citrix-openstack-build/sahara,citrix-openstack-build/sahara,keedio/sahara,zhangjunli177/sahara,tellesnobrega/sahara,esikachev/sahara-backup,egafford/sahara,matips/iosr-2015,mapr/sahara,tellesnobrega/storm_plugin,esikachev/scenario,tellesnobrega/sahara,esikachev/sahara-backup,henaras/sahara,esikachev/scenario,esikachev/sahara-backup,matips/iosr-2015,tellesnobrega/storm_plugin,crobby/sahara,keedio/sahara,xme1226/sahara,zhujzhuo/Sahara,redhat-openstack/sahara,zhangjunli177/sahara,ekasitk/sahara,zhujzhuo/Sahara,ekasitk/sahara,crobby/sahara,openstack/sahara,ekasitk/sahara,rnirmal/savanna,keedio/sahara,tellesnobrega/storm_plugin,redhat-openstack/sahara,egafford/sahara,esikachev/scenario,henaras/sahara