Script on external JS file

Moved the code from the onClick in processintel.js to IngressCleaner.js
(new file).
Formatted code, easier to read.
Toggle feature implemented

Toggle feature implemented
Version increased to 2.1 in manifest
Added click time to background console.log
Switch to Page Action

The extension only made sense in one specific webpage so having it there
all the time is useless
This may require to update screenshots and recordings
Version change (2.2)

Version change (2.2)
Merge pull request #6 from FKasa/master

Toggle working and switched to page action!