reworded pledge to sound less vague, minimize risk
h4 to 1em (not sure why this is needed, but I think it isn't working right otherwise)
ok, "medium" is the right word, I think this will work now, ignore last commit
added del/strikethrough and definition/description entries
simplified footnote wording
more clarity about definition lists
alert tag
alert style
alert styles
new alert class, changed margins on input buttons
added alternate header note
various revisions, new links, clarity, more instructions
changed Occupation to Occupation(s)
Optional IRC nick on user profile

Closes GH-133
Merge snowdrift.coop:~aaron/snowdrift
slight wording change in pledge text
All users can view/edit their *own* profile
Merge branch 'master' of git://gitorious.org/snowdrift/snowdrift
several improvements across page, error fixes, new links to table and code-block parts of Pandoc page
target=_blank for Markdown syntax link to avoid losing work