This is a preparitory patch to add the vis-timeline javascript library.
We will use if to display bookings in a timeline view on the bookings
page.
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com> Signed-off-by: Janet McGowan <janet.mcgowan@ptfs-europe.com> Signed-off-by: Caroline Cyr La Rose <caroline.cyr-la-rose@inlibro.com> Signed-off-by: Laurence Rault <laurence.rault@biblibre.com> Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com> Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>