show location / go to folder

[alexanderdd]

Is your feature request related to a problem? Please describe.
In All Media, the standard/first view of Photos, there is no easy way to see where the photos are stored or how to get to the folder.
I think for exampe "nice pictures, I need to rename them/move them somewhere else/..."

Describe the solution you'd like
Click on a photo, open the sidebar via the button at the top

• show the location of the photo (complete path)
• add a button "show in folder" - files app opens with the photo highlighted

Describe alternatives you've considered
none

Additional context
When looking at the initial All Media view (not in full screen) and you point at a photo, the directory is shown at the bottom left in firefox. This is not intuitive enough, and might not work well on other devices/browsers.

[joshtrichards]

Related: #729