Improve initial load performance

[ansonjwhe]

Add new "recent transactions" table that stores minimal info on each ticket (id, type, title)
Initial load fetches the "minified" version of tickets and displays ticket list quickly.
optimistically prefetch all tickets in the background.
smoother ux (hopefully prefetch will have finished by the time user clicks on a specific ticket)

temp fix.
if user's initial load is a specific ticket (/PPR/1) then full ticket data is still required.
true fix needs more thought in reworking frontend state management.