Consider improving building of esv-intersection controller in SeismicIntersection-module

[jorgenherje]

Ref: #449 (comment)

The controller object is rebuilt every render. If enhanced performance is needed, consider having a controller which "clears" added seismic and well when needed, and adds new when new data is retrieved.

Note:

• Possible suggestion: Have a clearSeismicLayer()- and clearWellborePathLayer()-method, which clears with controller.removeLayer(id). Then the view should only use add...Layer()-methods when data has changed?

[jorgenherje]

Closed by #631