Fixes a bug with characteristics and items not getting associated, meaning you couldn't query an item to get the related URL, even though both were in the database.
Adds contextual menu copy-to-pasteboard items to for every known URL for an image.
Some UI layout padding tweaks, to make sure all the views don't extend out horizontally to the left and right past the traffic light buttons and edge of the omnibar, respectively.
Adds some tasks to the todo list.
Merge branch 'feature/sharing' into develop