Moves the title field to the web view.

Fixes these:
-  [Link dialog does not have focus](https://github.com/wordpress-mobile/WordPress-iOS-Editor/issues/265).
- [Move the post title to the web view](https://github.com/wordpress-mobile/WordPress-iOS-Editor/issues/256).
- [Next button on keyboard does not work when Title field has focus](https://github.com/wordpress-mobile/WordPress-iOS-Editor/issues/200).
- [Post title should not be fixed ](https://github.com/wordpress-mobile/WordPress-iOS-Editor/issues/157).

Also fixes a problem with the toolbar in landscape mode not covering the full device width.
Actually, I tested this extensively, and prior to having this added the scroll view height update seemed to fail at times, and have a weird delay.

To put it in other words, I tried this as a last resource fix, and it was sooooo much better than triggering the same call on resize events coming from the HTML.  By adding this workaround the refresh seems to be even faster than it was before it.

I added lots of notes because it was sort of the ultimate fix for the height issues.