added some styles for the navbar search box

I still need to add the actual Drupal search here somehow. I'll hold off on the additional styles until the final HTML markup is available.
fixed navbar-collapse not hiding content on close
added Drupal search form to main navbar
search box WIP

I'm still trying to get the search box to output the correct HTML markup. For now, I'm just going to remove it from the site so I can focus on other things.
fixes to the main nav in desktop
secondary nav styles for desktop

Also, some reorganization.
added some notes on forms for later reference