Updated CybOX and STIX Support

This PR brings CRITs "up-to-date" with the latest versions of STIX and CybOX. There is still a group of CybOX objects which are not supported. They are not supported for two reasons:

1. There are no APIs/bindings for them in the python library.
2. The data model in CybOX is complex and there's no good 1-to-1 mapping of the value in CRITs to one of the fields for the CybOX object at this time.

Make sure to review UPDATING and the DEPENDENCIES file for versions and changes.

This update caused some additional minor changes worth noting:

* When Downloading a top-level object, there are changes to Result Format and Binary Format:
    * There is no longer an "inverted" option in Binary Format.
    * If you choose the "STIX" Result Format, we will force the Binary Format to be "base64". Binary Format's purpose is mainly for when you choose the "zip" Result Format so this change makes that more apparent.
* When importing a STIX Document, the form will have links to all of the content generated during the import.