PLD: replace form using patch, closes #529
PLD: default debug to false
spacing fixes
simplifying; clojure.string/blank? returns true on nil
PLD: change debug to a debug-api atom stored in a new settings namespace
Merge pull request #1136 from onaio/529-replace-simple

PLD: remove "add a form" link, closes #1111
Closes #907. Consistent loading style on the home page loading modal.