Adjust CSS for ul in pod

This attempts to address issue #648.

* increase margin/padding on left side to indent the ul
* Reduce vertical whitespace on paragraphs in uls
Revert changes for ul#index

It was never my intention to change the style of the index/toc. This commit will
special case ul#index when it comes to padding/margins, to keep the old look there
Merge pull request #930 from omega/omega/648-fix-pod-ul

Adjust CSS for ul in pod