Update travis.yml to build and deploy v6
[#76452620] further enhancement
WIP a11y.
[#76368466] improve trip planning review page accessibility - tab-navigation, itinerary details dialog by presssing ENTER key
Accessibility work [Fixes #76368466]
PA Logos
Update Tag to v6.0.5-rc.2
[fixes#76466968]restore the fix
[fixes#76452620] only show from&to once in booking information
[#76890696] trigger tooltip on cost and chart when focus is gained this will improve keyboard UX
Creates global config allows_booking for each instance.

Creates a global allow_booking setting for each instance.
Make logo tabbable and selectable [#76890696]
[fixes#75815252] move itinerary.service.fare_structure check before itinerary.cost to get fare
[#76890696] make top nav dropdown menus tab-able/selectable via keyboard
[Fixes#76737464] For one way trips, Ecolane booking shows the confirmation number twice.
[#76890696] review page: tab order consistency; spacebar to select controls; focus the right itinerary when details dialog is closed
[Fixes#76737464] Corrects Outbound/Return issues with the Ecolane Modal.  Temporarily reverts the look of buttons.
[#76881680] make sure important elements are tab navigatable
[fixes#76982296]
Accessibility (tabbing navigation & focus) fixes. [#76982558]