Removed unused constant.
For replacement see .utils.PORTALTYPE_TO_MIMETYPE_MAPPING
Reorganize the logic into two groups of helper and view functions.
Deflect the missing version issue by looking ahead for the version. #111
Add 404 tests for extra metadata API
Refactor redirect to latest code to remove duplicate code
Merge pull request #116 from karenc/extra-api-redirection

Extra API redirection
Set legacy version when creating collection minor versions
Merge pull request #120 from karenc/set-legacy-version

Set legacy version when creating collection minor versions
Adds a specific exception and more importantly a detailed message.
Change export file naming system from uuid-version.type to uuid@version.type
put new error message in the test, as well
Merge pull request #123 from karenc/rename-export-files

Change export file naming system from uuid-version.type to uuid@version.type
make subject a limit search - allow linit-only searchs
Rename /extra API to /extras to keep it consistent with other APIs
Rename /config to /extras (without ident_hash)
Return the number of Collections and Modules for each subject in /extras
Merge pull request #127 from karenc/numbers-for-content-page

Numbers for content page
need version in human friendly filename
fix tests for version in filename
Merge pull request #128 from Connexions/export-filename-version

need version in human friendly filename