/home/user/Dropbox/Development/www/

Alias /dropbox " /home/user/Dropbox/Development/www/"
<Directory " /home/user/Dropbox/Development/www/">
    Options Indexes FollowSymLinks
    Order allow,deny
    Allow from all
</Directory>

sudo service apache2 restart

sudo chown -R yourname:www-data /home/user/Dropbox/Development/www

sudo chmod -R 775 /home/user/Dropbox/Development/www