iOS 8 fixes for toc scroll imprecision.

Works consistently across iOS 6, 7 and 8.

Change-Id: Ia90f16b9c6d6a680affdf56828d99dd271915054
Stub launch images for iPhone 6, 6 Plus

Fixes web view resolution to render properly instead of in scaled mode!
These images look wrong and will need to be replaced to do the zoom
effect properly, but something needed to be present to force the OS
to let us run at proper resolution.

Change-Id: Ia3038537784f84171b0d674ca707fab40e8fd478