Comment 0 for bug 126684

Launchpad's style sheet currently is overly complicated:
* some rules are never used (e.g. .notforprint, .notforscreen, .hr)
* some rules are always overridden (e.g. hr, #portlets .portlet)
* there are several XXXs that need proper comments
* there are two conflicting sections for the columns in the normal page layout
* people have piled on several rules at the end of the style sheet that really should be elsewhere.

Fixing this will reduce debugging problems later. It should also reduce merge conflicts when developing the advanced UI, as the changed sections will be more contiguous.