Add storeId to store import

[f1sh1918]

Is your feature request related to a problem? Please describe.
To ensure that we have reliable and constant store ids, we have to provide them in the csv instead of identify a stores with name and address. Since the address may change f.e. if the store moves then currently the store will be deleted and a new store will be created even it is the same store

Describe the solution you'd like

• add a storeId to the csv
• display this storeId in the table
• add the store id to the storeConfig and make it mandatory
• check that the storeId is unique
• add the storeId field to the database table
• use the storeId to update stores