Move routes around

[lordrip]

Please describe the feature that you want to propose

Similar to OpenShift, it would be convenient to be able to move routes and other entities to let the user organize them in a convenient way for them.

It's not necessary to remember the final structure, perhaps saving the canvas state in SessionStorage would be enough.

[lhein]

While agreeing with the usefullness I would like to raise concerns because the next step is then that users want to save the manually rearranged state somehow. This will get very complex.

[lordrip]

Let's see what the feedback gives us, for now, we can act like OpenShift, the layout is not saved.