[Merge] lp:~doflah/gallery-app/reuse_delete_dialog into lp:gallery-app

[Arthur Mello]

Review: Needs Fixing

We now have two delete dialog options, the old one changed by this MR and a new one, for when the photo is inside an album. Would be good to update both of them to have this feature.
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https://code.launchpad.net/~doflah/gallery-app/reuse_delete_dialog/+merge/218541
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