* routed viewer (demo app)
* toolbar support
* app menu component for demo shell
* navigate back button
* fix unit tests
* improve viewer type detection and rendering
* download button
* automatic pdf rendition, spinners, ui tweaks
* border for pdf pages
* scroll top support
* docs update
* info drawer placeholder
- split apps view and single app view to reflect Activiti UI
- dedicated route for each app tasks: /activiti/apps/:appId/tasks
- remove performance bottleneck for activiti demo (AfterViewChecked)
- load stencil controllers together with Tasks view (fixes#1190)