Add missing favicons

[François Marier]

Many icons were added in bug 809693 but these sizes appear to be missing: 32, 96, 120, 128, 152 and 195.

<!-- For iPhone with high-resolution Retina display running iOS ≥ 7: -->
<link rel="apple-touch-icon-precomposed" sizes="120x120" href="/path/to/favicon-120.png">

<!-- For iPad with high-resolution Retina display running iOS ≥ 7: -->
<link rel="apple-touch-icon-precomposed" sizes="152x152" href="/path/to/favicon-152.png">

<link rel="icon" href="/path/to/favicon-32.png" sizes="32x32">
<link rel="icon" href="/path/to/favicon-96.png" sizes="96x96">
<link rel="icon" href="/path/to/favicon-128.png" sizes="128x128">
<link rel="icon" href="/path/to/favicon-195.png" sizes="195x195">

Also, we should have the following sizes within the favicon.ico file: 16, 24, 32, 48 and 64.

See the details on https://github.com/audreyr/favicon-cheat-sheet