Feature: Add Persistence Storage

[alanjames1987]

Records could be stored in the browser using the localStorage object.

[alanjames1987]

I might need to add datatype conversion to add this feature as the localStorage can only save strings.

[alanjames1987]

This should actually be done using IndexedDB as it is designed for this job. localStorage should be used as a fallback if IndexedDB is not fully supported.