Load TwoPhotonSession from JSON #13
Description
Once a session is imported, LFP and Nikon are often matched by hand. The results are then exported to a JSON file. This JSON file should contain the original file path, and there should be a way to initialize a TwoPhotonSession from this JSON file that would take the user back to the point of analysis he/she has reached. Maybe: store results of other functions running in init (cutting belt data...) to skip these? It is not a lot of time, so this is not important.