Added date formatting

If the post has been updated, show update date and not create date. If
update date = create date, only show create date.
See description for explanation.

Using Redirect::back() worked fine when I clicked a delete button on
the index page, but when I was viewing a specific post it redirected
back to a nonexistent post. Now it always redirects back to the index
page.
Took the media part off, not using it anymore
Formatting page and dates
Thought favicon was automatically used as the page icon, was wrong
Page standardization