Screen readers will read the collapsed content despite the fact that
it is not visible due to the way it is hidden with CSS. The more button
makes no sense for these users and is probably more confusing than
helpfull.
Bug: T291277
Change-Id: I71888d8b9565d5ee85c5e7a48965e9e9a76eb984
I tried to review all of them. Some of the changes I did:
* Make sure the `config` parameter is not marked as optional
when it is not.
* Make sure default values are mentioned.
* List individual `@cfg` options when it makes sense.
Note I don't list all options a class could accept (e.g. via all
its parent classes and mixins). That's too much. Instead I checked
how a class is actually used and list only these options.
Even then I don't list everything, e.g. unspecific options
like "classes" that can be used pretty much everywhere.
Change-Id: Idf4fbe1dc3608ace277df9e385f2f140df3a2f50
