Add copy file path

[kropptrevor]

Implements #36

In the right click menu:

Copy to clipboard Ctrl+C
Copy original size image Ctrl+X
Copy file path
Paste from clipboard Ctrl+V

I wasn't sure what the default key binding would be. Any suggestions?

[sylikc]

Interesting... I like this feature, and you've added it pretty cleanly

[Bobbsterman]

Nice!
I would go with some modification of C. E.g. Ctrl+Shift+C

[kropptrevor]

I've added a shortcut and an entry in the help screen. I did not provide translations, however.

[Bobbsterman]

Nice. Lets hope @sylikc finds time to pull some of these enhancements!

I can provide a French translation:
"copy image path to clipboard" = "copier l'emplacement de l'image"

[sylikc]

@Bobbsterman I'm merging this PR... the exact translation strings are right now are

"Copy file path of the image to clipboard"
and "Copy file path"

I'll roll them in when you translate. Some of the translation stuff also needs to get cleaned up as per #105

[sylikc]

@kropptrevor thanks for the contribution. This will likely end up being a feature I use almost daily!

Certainly was helpful to review your code, where I forgot to put help in my "Open containing folder in Explorer" feature, and forgot to disable it for clipboard images. 65e7905

FYI: I fixed the Russian translation file getting mangled and also the popup menu bug a326463

[kropptrevor]

That's good to hear. I'm happy to have contributed.