remove all hard-coded urls to live site; add some missing periods; fix all
h1's (in css and throughout site); misc cs fixes
fixed bizarre topic headers in skills.html
fix styling of navbar, including removing all of those br tags
fix styling/formatting of the footer
fixed styling of header; removed unused/unnecessary "default_text" and
"blocktext" stuff
forgot to remove a closing p tag
Merge branch 'master' into grammar_and_style

Conflicts:
	index.php
	style.css
Merge pull request #14 from chrissprague/grammar_and_style

Grammar and style fixes