Polymer app template for our app, based on starter-kit.
- Hierarchic routing.
- Added Page elements that are used for routing and to store page settings. https://github.com/bwh-rl/bwh-rl.github.io/blob/master/src/my-app-page.html
- Configurable panels and toolbars via page settings.
- Changed iconsets name to avoid complications with the default iconset.