Separating tabs of single panel to separate panels.
It will reduce amount of redundant calls, because it is very unlikely
that someone will need all tabs at once. Also, it is current approach
that is used by core projects.
Similar refactor for admin dashboard is located at [1]
[1] I874253e0e9a35ede8239bc1bdf0a330a44ade413
Change-Id: Ia8a432e136a9c06f3db887b9289d90853dd027e6
Partially-Implements BluePrint create-share-panel-group
a4fe656d0d