Provide a default context entity when context is not loaded.  Panopoly can creates an AJAX error when a user clicks the Page content tab when adding panes.  This commit fixes that issue.

Issue #2044177 by ericduran: Fixed This @todo blows up updates. The update method doesn't exist is the base StateMachine class.

Issue #2105049 by ericduran: Fixed Undefined index: bundles state_flow_entity_property_info_alter().

Issue #1972288 by stevector: Proper sorting within state_flow_entity_handler_field_state_flow_states_history_list.inc

Issue #1966920 by stevector: Improvements and fixes to Views integration to accomodate Workbench Moderation view

Issue #1890740 by kbentham and stevector: Standardizing variable names for the return value of state_flow_entity_load_state_machine()

Issue #1775540 by stevector: Using correct method calls in state_flow_handler_field_is_node_revision_published

Issue #1863216 by stevector: Moving state flow history entity pages to admin/config/workflow and the correct module.

Issue #1807668 by stevector. More odd cache-clearing needed to get StateFlowWebTestCaseInstallOnExistingSite working.

Issue #1789152 by stevector: fixing straight to published error by cleaning up node form integration and entity update/insert.

When State Flow is installed on an existing site there may be nodes already published. Those nodes should be considered as "published" by State Flow.

get_default_event_name() was not returning event names. Here is a fix and a test for what it was breaking.

Isssue #1683718, by kbentham, stevector: Adding state_flow_entity_get_active_revision_id() and  state_flow_entity_get_active_revision()