Add event tracking via google or other service

[ryansrofe]

Add basic Google event tracking to the widget for all actions taken by a user.

[ryansrofe]

Asked @carbonrobot if there is a centralized account for event tracking.

No user data or info. Fairly basic usage events such as:

• If we can, adding a new widget to canvas (number of widgets added over time)
• New log added or log deleted (number of logs created over time)
• Log edited (number of logs edited over time)
• Log type added with type (number of logs with type added and most popular type over time)
• Log link added with type (don't need to track links but the amount of links added would be great over time)
• Widgets settings being toggled (more for our own research to understand if settings are being used and how much and often)
• ...etc

I think we can call javascript events for google or mixpanel, etc.