Parameter change dialog expression support

[markusgraube]

In the parameter change dialog expression can be enterered using references to data assemblies of modules.

Here, it would be great if this could be supported by the user interface by making the correct typing and selection of data assemblies easier.

One possibility could be the use of typeahead functionality for data assemblies. Perhaps one could also use a special character (e.g. @) to indicate a reference to a data assemblies is following. Then, for example http://jeff-collins.github.io/ment.io/#/documentation would be a possible framework to support this.

@sheinze what do you think about this?

[sheinze]

I think this is a great idea. But i would think about using another character instead of "@", maybe a "#" or a "§", as the "@" is often bound to naming persons (slack, wire, whatsapp, etc.).