Create a new "instant-preview" dashboard whenever a process definition is imported. Characteristics of this dashboard:

• Must have a predictable URL based on the process definition key
• The dashboard template is a JSON file with a fixed name (location and name TBD). Depending on the query parameter values, a new template can be used. Like this we can have several templates
• The Backend will parse the Json file (which will be a file generated from Optimize using the export API (see below). Since the exported file will have concrete IDs (for Dashboards/Reports/XML Diagrams, etc), the backend needs to parse this file and replace the concrete data by placeholders, so that the dashboard can be used as a template for other processes. This makes it easier for the product manager to define and export a new dashboard template

  GET /api/export/dashboard/json/{dashboardId}/{fileName} 

• Make sure that access to this dashboard is only granted to users with proper permission: Will be handled in OPT-6701
• The request to the back end has the form:

GET /api/dashboard/instant/<PROC_DEF_KEY>/?template=<JSON_FILE_NAME> 

• The response of this request is still to be defined, but it will be analogous to 

GET /api/dashboard/:id

• Generation and update of the instant preview dashboards will be handled in OPT-6675

Testing notes

Can only be tested in conjunction with OPT-6675, so testing notes will be written there