* [grunt/build] refactor _build:notice task to not depend on npm
The _build:notice task used to rely on the output of `npm ls` to determine where modules were defined, but the task now just asks `license-checker` to include the `realPath` of the modules it describes in it's output, which is ultimately the same thing but works with `yarn` too.
* [grunt/licenses] convert to use lib/packages/getInstalledPackages()
* [grunt/notice/generate] test generateNoticeText()
* [grunt/licenses] tested assertLicensesValid()
* [npm] remove npm dev dep
* [tasks/lib/packages] do not include kibana in "installed packages"
* [tasks/lib/notice] join all notices with the same separator
The module paths are split by ':' and with a Windows filepath (and the 'C:/' prefix),
the split returns the drive letter and directory path separately.
This causes the modulePath to be set incorrectly into the packagePaths object
and the subsequent call for the licenses by key returns undefined on Windows only.
This commit recombines the drive and directory paths and sets the correct key into packagePaths.
* [build] Add notice file
* [build] Include license text if available
* [build] Look for both license and notice files
* [build] Add node license to notice
* [build] Add a base notice file including info on committed dependencies
* Bump license copyright year
* [build] Kibana at top of notice
