Added a main stylesheet for the application #15
Added booking specific styles #15

Added booking specific style for creating a Create button on the
bookings page.
Removed styles in the scaffold that were causeing issues #15

Removed styles that were not in line with the new styles for the
application that were added in main and bookings stylesheets.
Moved content div to layout #15

The content div is in the layout. This allows for the css that is
formatting the content to format each page appropriately.
Added divs to booking index #15

These divs will allow for a create button that is properly formatted
to match the full calendar buttons to be displayed on the top right
side of the calendar on the booking index page.
Added a header bar #15

Header bar has a perseverance home button, book, admin, rules, and
gallery. Only the home and book buttons are active.
Updates styles and added header styles #15