feat: contribute 'Workbench Application Platform' to allow integratin…

…g content from multiple web applications

SCION Workbench Application Platform is an extension to SCION Workbench and allows for integrating content from multiple web applications in a coherent way, thus enabling a micro frontend architecture for allowing different front-end frameworks to co-exist and autonomous delivery. It provides the concept of an application manifest with every application declaring its capabilities and intents to allow for loosely coupled inter-application navigation. Integration into the platform is as lean as possible, consequently, any web application can be integrated without the need for adaptation.

closes #80

README.md

@@ -5,13 +5,14 @@
 
 # Overview
 
-SCION Workbench helps to build multi-view web applications and integrates separate micro frontends into a consistent rich web application. Views are shown within tabs which can be flexible arranged and dragged around by the user.
+SCION Workbench helps to build multi-view web applications and integrates separate micro frontends into a consistent rich web application. Views are shown within tabs which can be flexibly arranged and dragged around by the user.
 
 <a href="https://github.com/SchweizerischeBundesbahnen/scion-workbench/raw/master/resources/site/pics/workbench-large.png">![SCION Workbench](/resources/site/pics/workbench-small.png)</a>
 
 The Workbench provides core features of a modern rich web application.
 -	Tabbed, movable and stackable views
 -	Activity panel as application entry point
+- Popups
 -	Global notifications 
 -	Global or view-local message boxes
 -	URL encoded navigational state