* Add new components for ProductCategoryControl, using a reusable SearchListControl
* Add sass variables from wc-admin
* Finish styling
* Save selected categories as selected for the block
* Style sidebar version of control
* Filter the categories list, highlight search term in result
* Filter out selected items in the filter list function
* Add spacing in the placeholder, remove unnecessary stylesheet
* Add a more descriptive label for screen readers
* Remove category references from list item options
* Switch to a configurable object of messages, so SearchListControl can be more customizable
* Add screen-reader message for toggling “done” and moving into preview
* Remove call to getProductCategoryControl
The component is simple enough to just drop in now :)
* Add documentation for all props
* Add padding to placeholder
* Rename fallbackrenderItem to defaultRenderItem
* Add a variable to save the selected count
* Add `isDestructive` to make link red
* Update item style
* Add a hover/focus background color
* Add travis to run JS & CSS linting, JS tests, and PHPUnit tests
* Move API initiation out of the gutenberg/files check
So that php tests run without having to build the JS files
* Add very basic product endpoint tests
* Fix stylelint issues in CSS
* Remove e2e setup, replace with dependency setup
* Add missing install step
* Remove cache for now
* Add specific `har-validator` dependency because v 5.1.2 has disappeared
* Only run npm install for the JS test job
* Check for installed plugins
* Update install location
* Fix typo in plugin name
* Check the BRANCH variable, rather than TRAVIS_PULL_REQUEST_BRANCH, which is only set on PR runs
* Remove debug command
* A change to trigger CI
* Set the expected node & npm versions
* Remove copy-pasted command, does not apply