webclient

Is your feature request related to a problem? Please describe.

Right now, this condition check on the delete() outcome has no value.

Describe the solution you'd like

I'd like to see the DefaultScript.delete() method check to make sure the deletion was done properly and then return a boolean value.

Or as @Griatch put it

The hard-coded URLs in the translation strings should be replaced by variables to ensure they are not different between languages.

Snapweb should support opus. There is a opus branch with a emscripten cross compiled opus library, but it's getting out of sync during playback, maybe the decoding must be done in a thread.

New feature motivation

Today you can choose to sprinkle colors of your different tabs but you can't give the badges different colors.
If I for example want to highlight that there are zero signed documents with a red colored badge I could make that tab pop by using a red badge color.

Example look:

<img width="520" alt="Screenshot 2020-10-29 at 12 48 17" src="https://user-images.githu