Hide/show branch action should be applied to all selected branches

[Mingun]

In the Local Branches you could select several branches at once. I expect that then actions from the menu will be applied to the all selected branches. But they applied only to that branch on which you click:

[goran-w]

It could be argued that the eye-icon is only present on a single row, so it makes sense to only affect that one.

HOWEVER, in the context menu for multi-selected Branches, there could be added the same kind of Visibility in Graph menu-item (see also #1713) that's used in the context-menu for branches in the log-graph : Visibility in Graph for selected <#> branches: <filter-icon> <hide-icon>

[adrianinsaval]

please implement this for tags too if you ever do this