Share dialog should be quittable with 'esc'

[MariusAlbrecht]

Is your feature request related to a problem? Please describe.
only quittable by clicking the 'x' or outside of the popup. This makes mouse action neccesary and feels unnatural (for me. I basically click 'esc', realise it doesnt work and then use my mouse)

Describe the solution you'd like
also make 'esc' close the popup

[barisgul15]

I just implemented this, because it also makes sense for me, but if you click outside anywhere on the tab on share dialog, it would also close the popup.

[MariusAlbrecht]

I personally think that makes sense.