Allow ordering bundle's presentation & Bundle for generic Service/Servers

[Wenneker]

When creating the invite, show the order which bundles present during onboarding and show (and allow reordering) their presentation when a user follows the invite.

possible suggestions for UI -

ordinal numbers placed upon click order;
Make the "target servers" reflect the UI for steps within bundles, and allow them to be dragged into an order for presentation.