Fixes from uBlock repo

[chrisaljoudi]

Currently includes:

• Use SVGs for icons instead of webfont (closes Icons are broken with standard font set. #15).
• setIcon for Chrome and Safari no longer sets both the icon img (expensive) and the badge text every time it's called.
  • IconState keeps track of the state of the icon for a tab.
  • Preliminary Chrome benchmarks suggest 22% less CPU time consumed by updateBadge total.
  • Safari has much more robust toolbar icon rendering overall.
• Safari support for inline-script blocking.
• Minor refinements to Safari popup behavior.

[chrisaljoudi]

@gorhill added some more fixes. Any idea why some of your commits are showing up as part of this pull request?

I rebased on gorhill:master — is that the wrong thing to do?

[gorhill]

I'm confused here. Why are you pushing fixes here?

I plan to work on this version only as I feel like working on something, I do not plan to support Safari, for the Fontawesome icons I am not sure I want to go the SVG way, etc. etc.

In short, thanks for the thought, but no need to push fixes/changes to here -- you have your plate full enough with the main branch.