Merge pull request #3195 from ehelms/engine-initial-products-page

Engine: Initial current_organization, navigation and products page rendering.
Engine: Fixes 3345: Adding katello to rabl paths.
Merge pull request #3200 from ehelms/engine-namespace-rabl

Engine: Adding katello to rabl paths.
Engine: engine-actkeys - page displays but missing proper path to assets
Merge pull request #3204 from thomasmckay/engine-actkeys

Engine: engine-actkeys - page displays but missing proper path to assets

refers #3316
Engine: Basic oldpane rendering.

Updated commit based on feedback from ehelms.
Merge pull request #3207 from bbuckingham/engine

Engine: modifications to support old tupane katello_base layout and akeys index
Engine: engine-sysgroup - fixes #3329

System group creation and editing works except for
+ Content -> Packages
+ Content -> Errata
Engine: Fixing ability to set remote_id and save the user object.
Merge pull request #3212 from ehelms/engine

Engine: Fixing ability to set remote_id and save the user object.
Engine: Update paths for some common assets (e.g. alchemy, fonts...)
Engine: Activation Keys: changes to support CRUD actions
Engine: remove the absolute namespacing for HttpResource
Engine: add namespacing to KTEnvironment reference
Merge pull request #3213 from bbuckingham/engine

Engine: Activation Keys: several changes to support the Activation Keys UI
Merge pull request #3210 from thomasmckay/engine-sysgroup

Engine: engine-sysgroup - system groups
Engine: Fixes #332: Enabling Sync Plans page.
Merge pull request #3221 from ehelms/engine-sync-plan

Engine: Fixes #332: Enabling Sync Plans page.
Engine: fixes #3257 - seed.rb added to migration
Engine: fixes #3381 - change username/email to Foreman column names login/mail