Added new error codes for custom data
Adding Flask Integration to the TOC (IAMDOC-201)

Also resolving a small default in the error pages
Changed sample apps page and docs menu
refs #635 Sample apps page updates
Fix typo in link
refs #635 Sample apps page updates
Merge commit 'refs/pull/22/head' of https://github.com/stormpath/stormpath.github.io into source
Moving images to source folder and rewiring all the broke images
AuthenticationScheme is uppercase now: AuthenticationScheme.BASIC