don't allow scrolling to right in WebKitView

[ignatenkobrain]

I mean left-right slider. I think it could be done by limiding viewport width.

[vrutkovs]

I don't think we can forbid WebKit to do this, instead we should make CSS wrap it properly. Lets close it to avoid duplicated work. Any other ideas?

/cc @mcatanzaro

[mcatanzaro]

Yes, force-hiding the scrollbar wouldn't be great even if it was possible. Hopefully the current CSS ensures content is never displayed too large horizontally; if not, we'll need to try harder with the CSS. (I'm not a CSS expert but I think the Firefox Reader CSS should have sufficed.)