webapp-container: allow local webapps to use url patterns, fix iframes opening in Morph
requested to merge klhio/morph-browser:ubports/xenial_-_allow-local-webapp-external-url-patterns into ubports/xenial
This solves two issues:
- iframes randomly opening in Morph
- local webapps being unable to use url patterns
Given that browser data is not shared with Morph I don't see an issue with allowing this - a simple QML app will be able to do the same anyway.