Only emit authorization header when it is not null
Expose method attributes at the dreamStage level
* updated copyright notice in all files with 2014.
* changed wiki.developer.mindtouch.com to mindtouch.com
Removed all INFO links to developer.mindtouch.com
Merge pull request #105 from bjorg/DR-120

DR-120 Remove links to obsolete documentation site
Do not recursively fetch attributes
Merge pull request #106 from yurigorokhov/MT-14717-2

Mt 14717 2
catalog checks
Branch: catalog_checks