Ant's Theme updates

This is a quick one to get some minor tidying up out of the way, before I rebuild the board index and mesage index into non-tabular markup. I'm just getting similar areas more consistent in markup and css.

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css/index.css:
	Have bumped the body text size a fraction (from 10pt to 14px). Should be better all round.
	Consequently, I'm calling some odd-looking font-sizes in em now.
	Trust me on this one. They're only numbers, and it'll work well once it's all sorted.
	Most of the rest is just styling tweaks to clean things up a bit. Should be fine.

languages/index.english.php:
	Shortened the quote to new topic string so it will fit with the other buttons.

Display.template.php:
	Quick reply editor is now more responsive for width (fixes #583).
	Quckbuttons have been rearranged to make likes and quote to new topic more workable.
	Minor markup clean up. Not much else.

Post.template.php:
	Fix for #583, plus minor markup clean up.

Recent.template.php, ProfileInfo.template.php and PersonalMessage.template.php:
	Minor markup clean up. More to do.

default/images/_light:
	Changed icons to remove tubby moose.

This one gets rid of tables from the board index, message index, unread topics and updated topics (new replies) pages. All lists now.
Media queries still need tweaking for smaller screens. Will do later.
Also tweaked up info centre styling. I'm going consistent everywhere (mostly).