Implement "setprefs" feature in dashboard side.
Implement "setprefs" feature in dashboard side.

jira - https://wso2.org/jira/browse/UES-585

swsachith/carbon-dashboards,keizer619/carbon-dashboards,sajithab/carbon-dashboards,lalankea/carbon-dashboards,swsachith/carbon-dashboards,swsachith/carbon-dashboards,sajithab/carbon-dashboards,ayshsandu/carbon-dashboards,lalankea/carbon-dashboards,sajithab/carbon-dashboards,ayshsandu/carbon-dashboards,keizer619/carbon-dashboards,ayshsandu/carbon-dashboards,keizer619/carbon-dashboards,lalankea/carbon-dashboards