CRM-5658 Implement improved float clearing method

I'm working on some other layout fixes in Confirm.tpl and Thankyou.tpl. Will check on this a incorporate as needed (for some reason the billing name was duplicated in the latest commit on those files). Also, on a related note, the recent patches used markup shortcut that doesn't work properly (at least in firefox):

<div class="clear" />

Firefox doesn't seem to see this div as closed and so the containing section doesn't get the margin-bottom style applied. I'm changing all these to use:

<div class="clear></div>

I was going to work on a patch to remove all of these clear divs and replace them with a clear-block implementation, which is a lot cleaner, works in all browsers and doesn't require empty elements ... probably won't have it before tomorrow tho

Matt - If you can quickly post a replacement example for 'clear-block' implementation - we can look at it and potentially implement on our side.

Attached patch implements clear-block for all the already re-worked templates. A new css class, crm-clear-block, is based on the drupal clear-block style, which in turn is based on easy clearing:
http://www.positioniseverything.net/easyclearing.html

This allows you to apply a class to a container which effectively tells that container to contain all floats without additional markup. Untested but the patch should apply to trunk

Pushing this to 3.2 since if we use this approach we would want to use it in all places.

CRM-5623 commits should have fixed the original 'extraneous empty billing name' issue.

These 448 issues have not been worked on for the past 18 months.

Doing a bulk close of old issues to make the issue queue more manageable. We should do this on a periodic basis.