Merge pull request #534 from fredericbonjour/Admin

Timeline and localization Asides. Added `value-ids` attribute on pickers. Various style fixes.
modelKey and propertyKey twig functions added
Merge pull request #536 from franckstauffer/i18n

modelKey and propertyKey twig functions added
Removed auto-focus on first editable and visible field in editors.
Added `<rbs-field-select-from-collection/>` Directive.