Code cleanup

BackendConfigManager.java:
Extracted methods loadBackendClass() and toWritabilityMode().
Added generic types.
Used AutoRefactor.

git-svn-id: https://svn.forgerock.org/opendj/branches/opendj3-server-dev@11236 41b1ffd8-f28e-4786-ab96-9950f0a78031
OPENDJ-1545 Remove Workflow, NetworkGroups and related attempts at building a proxy

WorkflowConfigManager.java, NetworkGroupConfigManager.java, WorkflowElementConfigManager.java, LocalBackendWorkflowElementConfiguration.xml, WorkflowConfiguration.xml, WorkflowElementConfiguration.xml: REMOVED

git-svn-id: https://svn.forgerock.org/opendj/branches/opendj3-server-dev@11237 41b1ffd8-f28e-4786-ab96-9950f0a78031
Replaced OpenDJ Server classes by equivalent SDK classes.

DurationUnit.java, SizeUnit.java, DurationUnitTest.java, SizeUnitTest.java, StringPrepProfile.java: REMOVED

git-svn-id: https://svn.forgerock.org/opendj/branches/opendj3-server-dev@11238 41b1ffd8-f28e-4786-ab96-9950f0a78031