Don't require clipboard permissions for context menu

[kjk]

We use clipboard permissions to construct the right context menu.

But it requires permissions dialog. We should track if we have those permissions and only use the clipboard APIs when constructing context menu if we do.

[pihentagy]

I run edna from "Web apps" app in Linux Mint, using Firefox. I just realized there should be a clipboard menu. How can I add clipboard permission to edna?

[kjk]

@pihentagy Unfortunately I don't know. I don't have that particular setup to test.

[pihentagy]

Found this
https://support.mozilla.org/bm/questions/1068472

[kjk]

@pihentagy let's reset: there is no "clipboard" menu. There's only Run code / Run this block with clipboard context menu. We check clipboard content to see if it's empty to enable / disable this command.

[pihentagy]

Great, now I can see the context menu in Firefox!