Handle websocket document stale event

[teosarca]

Type of issue

Feature request

Current behavior / Expected behavior

Atm frontend reacts to websocket events which are about stale tabs.
It was implemented in #795.

In that message, now we introduced another property called "stale" (boolean).
If that property is set and it's true, the fontend shall refresh that document (only the header and not the included tabs, if that's not mentioned in the event).

So, the JSON which is sent via websocket might look something like:

{
	"windowId":540354
	"id":2156425
	"stale":true
}

Steps to reproduce

• login with user "it" (important)

• open following "Businesspartner B2C": https://w101.metasfresh.com:8443/window/540354/2156732

• Actions -> Create request:
  

• Fill the request (see screenshot, those highlight are important)
  

When the request is saved (it should be already) an websocket event will be send to refresh the bpartner.
After refreshing the BPartner, you will remark that the date you filled in request is now in BPartner:

---

required for metasfresh/metasfresh#2066

[Dunkat]

@teosarca could you provide password fot user "it"? Needed for

login with user "it" (important)

[teosarca]

@Dunkat provided privately

[metas-lc]

IT

1. Businesspartner B2C -> actions -> create request
2. set summary and date, ok
   => bpartner was directly updated with that date (didn't have to refresh) OK