web-ui settings: Improve font settings layout, clean up related css file.
web-ui settings: Improve font settings layout, clean up related css file.

BUG=75327
TEST=Verify that sample font text is no longer clipped by default.
Review URL: http://codereview.chromium.org/6708040

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@78771 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser