Add asynchronous updating when viewing a term

[machawk1]

Is your feature request related to a problem? Please describe.
While two users are viewing a term, if one comments, the comment will not be shown until the page is reloaded. There are a few technologies that exist that could make this more fluid to feel more interactive (e.g., Service Workers)

Describe the solution you'd like
When a comment is left on a term I am viewing, the page is updated with the comment. This might also apply to a change in definition, vote count, etc.