- Replaced newlines with <br> tags.
- Added the improved CSS; thank you Greg!
- Moved the CSS to a separate CSS file.
- Added the files for the background image.
Added the ability to vote for poems.
Added a navbar to move between the submit and view pages
Updated CSS for navbar
Fixes to styling esp. votes

1. I made the CSS selectors less specific.  It is better practice
   to not use overly specific selectors (e.g. having div.poems and
   span.poems meaning different things)
2. I made the number of votes display to the right of the poems.
3. I made the number of votes larger and removed the label. Tech
   student will understand why there is a number there.
4. I changed the vote link color, size and text.
We don't need <br> tags in pre.

Because we are using pre tags for our poems, the nl2br function was
giving us double newlines, which means too many spaces in poems.