fix wrong # whole genomes in public data menu
edit nav dropdown link names and tooltips
remove redundant withdraw button
add "new s.q." link on /safety_questionnaires
tweak About menu, add blog and twitter
add "your participation" column to google surveys index
add Delete buttons to surveys section on "edit public profile" page
change default ui mode to bootstrap
show light grey "Keep" instead of an empty cell on removal requests
page, if data/sample removal is not requested. refs #595