Changes to log an entry

All tests pass. BTW, the home page is (changed to) home#index.

Per your request, I made /entries/new look somewhat like 'Screen Shot 2013-02-01 at 2.58.46 PM.png' (from your email).

Per your request, I did this using only Bootstrap Markup and simple_form, without making any CSS changes.

The input at bottom, Categorize (which defaults to 'Family'), lacks its drop box icon. I assume that's okay for now, since we don't have the tag system yet.