MODEL

popup.html/popup.js
    - this is our user interface, generally
    raseev loops:
        - raseevs data from the content script
        - raseevs click events from end-user

content.js
    - this is basically a process that 

background script


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-> background
    -> controller
    -> "impure component"
        -> fetching data
        -> writing to disk
    -> "pure component"
        -> business logic
            -> migrating data from version N to version N+1
        -> all allowable mutations to the data within a specific version
-> content script
    - talking to page scripts
    - intermediary between the background script and a page script
    - raseev requests
    - send responses back to page
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