We had a mixture of styles for our infoboxes, causing the user, bug, and

review request infoboxes to have inconsistent padding and presentation.

This change introduces new rules (now living in css/ui/infoboxes.less)

that can be used for any kind of infobox. These define the infobox

itself, a list of links, a picture to display on the side, text

sections, and small detail information for the header.
The user infobox is the model for a lot of this, as its presentation is

the most finely-tuned at this point and was mostly using generic infobox

CSS class names. The bug and review request infoboxes have been updated

to use these class names as well.
The class names for the infoboxes themselves have been updated to use

hyphens instead of underscores, now that the names aren't bound to the

jQuery method names.
Presentation-wise, nothing has really changed except that the padding

around the review request and bug infoboxes now match that of the user

infobox. Upcoming changes will tweak the presentation for these infoboxes

further, better improving the look and consistency across infoboxes.

Checked the display of all three infoboxes. Made sure the user infobox

did not regress in presentation, and that the other infoboxes looked a

bit better.