Add notebook tours, icons

[bollwyvl]

• fixes JSON Tours in Notebook metadata #26 (at least the show-a-tour part)
• includes Fix id in TourManager.addTour #28
• adds some icons
• unifies translation and sorting in the tourManager
• use schema to validate metadata
• figure out how to un-confuse ts-jest when using the tsconfig.json setup that allows for importing schema, etc.
• update some more things to be IOptions instead of ever-longer positional/optional args?
• add a label to the launch args to be able to find by human-readable name?

  • this would allow for command-linker HTML, which would be nice

• improve/replace the launch dialog
  • at a minimum, show the human-readable name
• add tours to launcher?
• add some client specificity awareness to tours
  • notebookPage?
• create a MIME renderer?
• avoid extra copy of ajv
• avoid duplicate assets in $prefix/share and labextension
• toast?

screens

what	it looks like
basic notebook ui
icons in help
icon in palette
icon in advanced settings
icon when it's busted

[fcollonval]

@bollwyvl would you have time to look at the rebase?

[bollwyvl]

Yeah, meant to do that, but frankly don't remember what was contentious/half done, so might take me a bit of looking.

[fcollonval]

Yeah, meant to do that, but frankly don't remember what was contentious/half done, so might take me a bit of looking.

Thanks for getting back. Don't worry then. I'll move forward with this to get closer to a release; there are still two points I want to address before that.

[bollwyvl]

Looking now... i see you already did the rebase. Rad! Looking now.

[bollwyvl]

Ran the setup locally and made some changes to the template-generated stuff which burned my eyes.

I'll update the top comment with some thoughts on possible tasks to get this out the door...

[bollwyvl]

Looking at the list of stuff i added up top, it is again probably not worth blocking on this to get a major version alpha out that works with lab4/nb7, though some of the API changes would be breaking.

Probably want a 3.x branch (from ... a fairly long time ago), so we at least have the option of backporting stuff, time/need permitting.