Add dynamic buttons partial to Box lifecycle phases

[maebeale]

To walk to the "next" lifecycle phase upon completion of the existing one, there should be dynamic buttons at the bottom of each of those pages (that depend on permissions and availability) to complete, solicit, or exit that phase.

Once a current_user finishes one phase (e.g. Assembly), they should have 3 options:

• "complete assembly and claim shipping" (if they have permission to ship)
• "complete assembly and solicit shippers", or,
• "exit assembly." _(At least, I'm pretty sure those are the three options. I keep feeling like there's a fourth. But pretty sure it's just those: Complete current step and claim next (without triggering the AutoEmailHandler. This one should only be available if the current_user has Permission to complete the next phase), Complete and solicit for next step, or, Exit.

The Box knows which is the next step (aasm_state field managed via aasm gem and aasm do block in box.rb), so the buttons could be one partial that goes on all the lifecycle /new pages that dynamically renders/calls the right "next" step.

[amygori]

🙋

[maebeale]

FYI, none of the react buttons on /[lifecycle phase]/new currently do anything (in case that part was confusing).

[maebeale]

@amygori hey there! hope all's well!!! we've got a hack night meetup tomorrow eve to help with this project, and this might end up on the radar to tackle -- unless you might have time for this issue within the next week or two?