Paste activities into the picasso using Ctrl+V

[carlobeltrame]

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.

[carlobeltrame]

Maybe also Ctrl+Z for undoing a change on the picasso? It can happen with the drag handles that a schedule entry is accidentally resized (more easily than in eCamp v2 since we allow schedule entries across day boundaries). History or last undo state could be saved in localstorage / sessionstorage etc., but this feature might be more complex than it sounds.

[carlobeltrame]

Another user reportedly tried Ctrl+V to paste an activity.