Bug#899338: workaround

[積丹尼 Dan Jacobson]

Here's how I successfully was able to browse finally again:

     Remove the following packages:
1)     libwebkit2gtk-4.0-37-gtk2 [2.21.2-1 (experimental, now)]

     Downgrade the following packages:
2)     libwebkit2gtk-4.0-37 [2.21.2-1 (experimental, now) -> 2.20.2-1+b1 (unstable)]