Use default 4.0 styles for forms

only add rules for drupal specific elements, such as the description
Fix styling for date and time form components

Don't not make select elements for the date and time components full width
don't display managed_file upload input as full width
Format css to match other css files
Merge branch 'issue-2' of github.com:mfairchild365/unl_four into mfairchild365-issue-2