* jsdoc.json was copied from Minerva. The markdown plugin from that
config was removed since there no usages of that in Vector.
* Added latest jsdoc dependency to package.json
* Copied 'jsdoc' task from Minerva into Vector. Revised storybook output
so that multiple docs (storybook + jsdoc) could be in /docs
* Made collapsibleTabs.js JSDoc compliant (This was really the only
thing using jsduck syntax)
* Modified Gruntfile stylelinter to ignore docs folder
Bug: T239258
Change-Id: Id07d591ffe7bf0ac021109051e89b91ffdcf4c78
