deploy 7.x-2.0-beta1

Changes since 7.x-2.0-alpha3:

• #2388119 by Cottser, reevo: Get CSRF token from /user/login endpoint
• Added example code to hook_deploy_plan_publish showing how to use status to do something.
• #1890408 by badjava: Add API documentation for post deployment hook
• #1890408 by badjava: hooks for pre/post deployment
• #1902774 by Cottser: Update deploy.api.php
• #2499783 by artematem, badjava: Add plan clean up functionality
• Add PHP 5.6 to the list of version to test with
• Switch to drush 7.x instead of dev-master (aka 8) so PHP 5.3 builds work on Travis CI
• Add label for 'old' entity to the diff data
• Add ssl context to drupal_http_request() calls
• Run apt-get update before install for automated Travis CI tests
• Handle entity_uri() usage gracefully.
• Add missing docblock
• Implement 'drush deploy-delete-plan'
• Fix spelling mistake in deploy_managed_ui module.
• Fix package name on deploy_adhoc_plan.
• Add new Rules implementations to support session-based, ad hoc plans
• Consolidated the adhoc tests
• Made the deploy_auto_plan session stuff somewhat testable and created a test for it with the functionality provided by deploy_adhoc_plan
• Fixed issue with adhoc plan creation and extended tests.
• Add bare bones test and configure link in info file
• Add deploy_adhoc_plan module
• #2243537 by timaholt: Added a way to filter out certain entity types in deploy Auto Plan.
• Support switching auto plan on per session basis