Add integration tests for all active and maintained components to sho…

…w that they can all be bundled correctly with the service (#35)

* Add script to create a list of all components, this will be used in the integration tests

* Add an integration test which checks all components which are active or maintained and have JavaScript are able to be bundled via the JavaScript bunding API endpoint

* use jsdom instead of vm as it gives us all the correct global variables that a real DOM would have

* Make webpack use the .bower.json file if a bower.json does not exist. This is the case when a bower component has been published that has not included it's bower.json file

* Enable the request log to be configurable, so that we can turn the logs off when running tests

* Ignore all o-comment components as they are being rebuilt entirely and currently are written in a way which is not valid browser-based JavaScript

* Add fetch polyfill to enable running the JS bundles inside JSDOM

* Add integration tests for css bundling of all active and maintained components

* fix lint error

* update components.json

* Update webpack-config-bower.js

* Add comment about .bower.json

* Update fetch-components.js

* fix lint issue

* move url construction into a function

* Create function to execute JS in a browser context to make tests more readable

* move repeated code to top of file

* move more repetition to top of file

* make test more readable

* fix tests

lib/webpack-config-bower.js

@@ -30,7 +30,8 @@ module.exports = ({
 			// the order is respected
 			modules: [path.join(installationDirectory, "bower_components")],
 			// These JSON files are read in directories
-			descriptionFiles: ["bower.json"],
+			// We use `.bower.json` and not `bower.json` because this file is created by Bower for every component that has been installed.
+			descriptionFiles: [".bower.json"],
 			// These fields in the description files are looked up when trying to resolve the package directory
 			mainFields: ["browser", "main"],
 			// These files are tried when trying to resolve a directory