Feature request: dialog to edit position of all guides
Operating System: any
Description of the feature
I'd like the Image -> Guides menu to include an "Edit Guides..." dialog that would allow me to see the positions of all guides in the image, and to be able to edit their positions (with a unit selector), delete them, or add new guides, all from the dialog. I often end up going to the Guides menu to look for that feature, and every time I'm surprised (yet again) that it's missing, because it seems like a pretty obvious feature to have if you're going to have multiple guides on an image.
This issue is basically a combination of #957, #750, and #138. But while those feature requests ask for the ability to edit individual guides, this one is asking for a dialog that allows viewing (and editing) the position of all guides in the image.