FLOWUI-13 Add brick position and symboltype for visualization of flows in the UI, FLOWUI-14 Edit flows
This modification to the data scheme/ GraphQL server allows supports two features of the UI:
- display a brick according to its symboltype (e.g. Inlet, Outlet, ..)
- save/reload the location of a brick on the canvas
- append new bricks, connections to an existing flow
Edited by Irene Stemmler