Fixes #3596 - Deep linking issue with spaces

[owenconti]

Fixes #3596

Wrapped tags and operationIds in function that will replace spaces with underscores. I chose this approach because swagger-js is already replacing spaces with underscores for operationIds in the opId function.

[shockey]

I'm able to break this implementation using the sample spec from #3631 (found at https://gist.githubusercontent.com/shockey/92386d99bac3962d4927e5c02fd43f37/raw/0a34e7de896370672e0a8984b49cef96b810d6d0/ui-3631.yaml):

Uncaught (in promise) DOMException: Failed to execute 'querySelector' on 'Document': '#operations-Tag_with_special_characters?-post_resource' is not a valid selector.

Since the ids on tags and operations will be used in a querySelector, we need to escape/encode any characters that are special in the context of a CSS selector.

My guess is that a string URL encoder will get us pretty far in that regard, but encoding needs to be balanced with readability of the resulting URL.

[owenconti]

@shockey I've update the PR to use the CSS.escape (via polyfill). Tested in Chrome, Safari, and Firefox with special characters and spaces.

[shockey]

Thanks @owenconti, the changes look good.

Can you add some tests for createDeepLinkPath and escapeDeepLinkPath? I know they're quite simple, but it would be nice to codify the existing functionality in tests, in case we make changes down the road.

[shockey]

Approving this so it ships today. I'll create another ticket asking for tests 👍