[bottlepy] Viewing using a JavaScript library

Trying to use bottle to view / navigate through a combination of yaml / DBMS data in a python project.

So I set up the bottle project in a separate directory and really like the simplicity of bottle.

Just wondering - what is a good rich UI integration layer to use with bottle and what tye of directory structure I could have.

I have a main file called Controller.py to route requests and other subdirs underneath for additional python modules.

What would be a good JavaScript library to be used to create nice HTML5/CSS interfaces with - to be able to click and send req/res back through bottle?

Eg. would MeteorJS not be too heavy? How would PolymerJS work? Any and all suggestions towars lightweight and elegance would be much appreciated.