Issue #62: organize buttons into a dropdown

[herbdool]

Fixes #62.

Alternative that puts buttons other than "Edit" into a dropdown. The dropdown is custom since there's nothing in core to help with dropdowns that contain buttons.

[herbdool]

@irinaz have you had a chance to test this? Would be good to have a go at this so it's easier for @laryn to review.

[irinaz]

@herbdool @laryn look great to me. I tested it with https://github.com/backdrop-contrib/paragraphs_aplenty and I think that this change can be merged as is.

[irinaz]

@herbdool , there was small styling difference for unpublish/remove links for cards/card , but I think that new display is much better even with this glitch.

Thank you so much for making it work!!

[herbdool]

@irinaz for testing.

I can't recreate that issue you've got with the dropdown. This is what I see:

Did you test on a fresh install? It's best to do it clean to ensure there's not something else interfering.

[irinaz]

@herbdool , I tested on another site and I see what you see.
@laryn , I think that this is ready for merge :)

[laryn]

@herbdool Can you check/test this commit and let me know what you think?
92c4806

[herbdool]

I'll check it soon.

[herbdool]

@laryn this works well for me. Thanks for fixing the JS! I suggested a couple tweaks to file location, etc. but I think it's more or less ready.