Simulation wizard: users cannot enable using saved states

[leendertvanwolfswinkel]

User:

"I ran a simulation in which I write a saved state (https://api.3di.live/v3/simulations/125425/events/). This also seems to have been successfully written (see URL).

Now, however, I want to start a new simulation with that saved state, but I cannot click this at initial conditions, because this option is grayed out, see screenshot."

Simulation ID: 125425 Schematisation "sgravendeel" (id 6678) Revision 25 (id 47897) Organisation: Nelen & Schuurmans Consultancy

Related issue: #357

[leendertvanwolfswinkel]

The events of the simulation that the simulation template refers to contains savedstates and initial_savedstate. The savedstates are the states that have been saved during this simulation. We do not need them here. The initial_savedstate is the saved state that was used to initialize the model at the start of this simulation. We do need that one.

We also need the list of saved states available for the threedimodel that is used in the simulation template.

To do's:

• [x] Remove the sub-option 'load from saved state'. We will deal with this on the Initial conditions page
• [x] Make some additions / changes to the Initial conditions page (marked red in the image below):
• [x] If the threedimodel contains no saved states, the option 'Saved state' and the dropdown should be disabled (greyed out)
• [x] If the threedimodel does contain saved states, the dropdown should be populated with those saved states
• [x] If the simulation template contains a initial_savedstate, this saved state should be selected by default in the dropdown.
• [x] If the checkbox 'Saved state' is checked, all the 'initial water level' options should be greyed out. If it is not checked, they should become available again.

[leendertvanwolfswinkel]

@ldebek Tested, please merge :)