updated REST quickstart
fixed typos
new Java QS
added Node.js to home dropdown
fixed client code
fixed some links
fixed a bunch of relative links.  Added python specific social integration features to qs
QA changes to new quickstarts
fixed typos
Adding a Flask quickstart.
Merge remote-tracking branch 'origin/new-quickstarts' into new-quickstarts

* origin/new-quickstarts:
  fixed typos
Adding missing asterisk.
Adding images.
Adding code block to the end.
Adding separator.
Updating screenshots.
Merge commit 'refs/pull/49/head' of https://github.com/stormpath/stormpath.github.io into source