[fwd-port] Update LICENSE file

hippo-essentials/plugins/skeleton-package/src/main/appended-resources/META-INF/LICENSE
/instructions/js/bootstrap.min.js
File is missing from LICENSE

hippo-essentials/dashboard (webapp)
components/google-code-prettify/src/prettify.js
docs/rest-api/lib/jquery-1.8.0.min.js
docs/rest-api/lib/jquery.ba-bbq.min.js
docs/rest-api/lib/backbone-min.js
docs/rest-api/lib/handlebars-1.0.0.js
docs/rest-api/lib/jquery.wiggle.min.js
docs/rest-api/lib/underscore-min.js
docs/rest-api/lib/jquery.slideto.min.js
docs/rest-api/lib/swagger.js
docs/rest-api/lib/shred.bundle.js
docs/rest-api/lib/highlight.7.3.pack.js
are missing in LICENSE file and should be added

angular/components/angular-tablesort/*
is mentioned in the LICENSE file but is not packaged, so this attributions should be removed