Paste activities into the picasso using Ctrl+V

The current options for pasting a copied activity can be hard to find, especially since we do not have a context menu like eCamp v2 did (which I support, because a context menu is not common in webapps, and it's not compatible with touch devices).

According to a user who struggled to find how to paste an activity, apart from the context menu she also tried Ctrl+V. So maybe a keyboard shortcut would help users find this feature.