Support selecting multiple drawn elements

[marco-c]

Currently you can select one by one, it would be nice to be able to select multiple elements and apply the same action to them (e.g. move them together by maintaining the relative distance between them, deleting them all, copying them all, etc.).

[marco-c]

@calixteman currently this is supported by a keyboard combination (CTLR+A) and with a context menu option ("Select All"). Should we consider this done or should we also support selecting multiple items by creating a selection area by holding the mouse button and moving it?
I guess this isn't so easily feasible with our current UX where we don't have a separate tool for selection only like Acrobat does.

[marco-c]

Should we consider this done or should we also support selecting multiple items by creating a selection area by holding the mouse button and moving it?

For now we won't support this, but just CTRL+A, "Select All" context menu option, and CTRL + click on elements to select.