Added crypto plugin encryption to Secrets post.
Add paged list of secrets via secrets GET;
Merge remote-tracking branch 'upstream/master'
Added paging logic, preliminary unit tests
Added decrypt via plugin.
Removed barbican.crypto.fields module.  Use plugin system instead.
Finished secrets GET unit tests;
Fixed order test.
Merge pull request #48 from mkbhanda/master

keystone middleware for authentication and access control
Merge remote-tracking branch 'upstream/master'
Fixed unit tests to mock policy enforcer;
Add support/tests for paged orders list via GETs;
Merge upstream policy changes.

Conflicts:
	barbican/api/resources.py
Fixed tox tests broken by upstream commits.
pep8 fixes.
Merge pull request #51 from dmend/master

Added encryption plugin framework.
Release for v0.1.39
Prepare for next release
Release for v0.1.40
Prepare for next release