Editor: Small title field requires scrolling, Macnchrome

I proof the title before publishing and consult it during tagging. I find myself cursoring back and forth in the title often. Proofing through a porthole is friction on every post. wp-admin has a much bigger title field.

https://github.com/Automattic/wp-calypso/issues/1059

#1059-gh-wp-calypso, #chrome, #desktop, #editor, #input-scrolling, #macos