[Less'd version] second theme and LESS'd file re-structuring

Hello,

Earlier, I added the LESS'd theme to this project since I intended to use the different variable values to churn out completely different looking websites.

Now I have come around to actually work that out and have fixed few more bugs in the LESS'd version along the way.

I have also reverted the original *.html files in main folder to use the original CSS file that you guys have created.

I have moved LESS'd versions inside "theme" folder and have added a dropdown in nav bar to switch between them.

Hope you will find this useful.

As earlier - let me know if you want any changes to be done.. and I can try and fix it for you to make it more usable.