Manual export of albums and multiple images
@debarshir
Submitted by Debarshi Ray Link to original bug (#760839)
Description
Currently we can only export a single image at a time. We should support exporting albums and multiple images from the selection mode. See these mockups from Allan: https://raw.githubusercontent.com/gnome-design-team/gnome-mockups/master/photos/wires-export.png
We should first add an export button to the selection mode (bug 760838) before implementing this.