also set a `selected` state on Dashboard item on the navbar whenever user is on a dashboard.
also set a `selected` state on Dashboard item on the navbar whenever user is on a dashboard.

dashkb/metabase,zoowii/metabase,dashkb/metabase,zoowii/metabase,blueoceanideas/metabase,dashkb/metabase,Endika/metabase,dashkb/metabase,blueoceanideas/metabase,blueoceanideas/metabase,zoowii/metabase,Endika/metabase,Endika/metabase,blueoceanideas/metabase,dashkb/metabase,Endika/metabase,Endika/metabase,blueoceanideas/metabase,zoowii/metabase,zoowii/metabase