Performance Improvements

[gbaptista]

Related to: CPU consumption in Firefox #78

Major changes:

• Performance settings shortcuts.
• Use Vanilla JS for logs UI.
• Avoid sending too many messages per second.
• Remove all setInterval loops and use FIFO queues to send events only when is real needed.
• setBadgeText, setBadgeBackgroundColor and setIcon are expensive calls, using only when really needed.
• Avoid parsing json to generate counters.
• Improving event dispatch from interceptors.
• New code structure for background page.

Some references:

• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Memory_Management
• https://en.wikipedia.org/wiki/FIFO_(computing_and_electronics)