Apache gives 403 Forbidden
Solution 1:
Your server is set to not follow symlinks. Add this line:
Options +FollowSymLinks -SymLinksIfOwnerMatch
to your http.conf. For more info: http://www.hackersgarage.com/symbolic-link-not-allowed-or-link-target-not-accessible.html
You will also need to add browse access for others to each folder, all the way up to /home/somekittens/Dropbox/Project/Joomla/. i.e.
sudo chmod o+x /home
sudo chmod o+x /home/somekittens
chmod o+x /home/somekittens/Dropbox
chmod o+x /home/somekittens/Dropbox/Project
chmod o+x /home/somekittens/Dropbox/Project/Joomla