Allow admins to create users and API keys.

Galaxy half of this should land in central shortly.
Add ability to create library folders.
[maven-release-plugin] prepare release blend4j-0.1-alpha-2
[maven-release-plugin] prepare for next development iteration
Failed to close alpha-2 because lacked javadoc and sources jar (new requirements?).

Will try to see if these changes allow an alpha-3 to published.
[maven-release-plugin] prepare release blend4j-0.1-alpha-3
[maven-release-plugin] prepare for next development iteration
Ergg.... lets try this again.
[maven-release-plugin] prepare release blend4j-0.1-alpha-4
[maven-release-plugin] prepare for next development iteration
Ergg.... this time things weren't signed. Trying again.
[maven-release-plugin] prepare release blend4j-0.1-alpha-5
[maven-release-plugin] prepare for next development iteration
Still not signed.
[maven-release-plugin] prepare release blend4j-0.1-alpha-6
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release blend4j-0.1-alpha-7
[maven-release-plugin] prepare for next development iteration
Update to latest galaxy-bootstrap (vastly speed up testing).
Fix type hierarachy for HistoryContents (it is not a History, it does have a name though).