The relationships between control.ts, inject.ts and table.ts are too complicated

[philipmulcahy]

It feels like incremental/organic growth in capability has left the code in a bit of a mess:

• transactions have been hacked in
• table type (when orders are the input) is only discovered by a lookup instead of in the original command from control.ts, even though control.ts also controls the table type selected (radio buttons).
• duplication of code in table.ts

[philipmulcahy]

I fixed the lookup thing in 374_simplify_control_flow, merged in 4052c52 and removed an amount of code in table.ts, but not enough to justify crossing off the third bullet.

[philipmulcahy]

wouldn't it be cool if transaction scraping progress was made visible in one or both of the worm bar at the top of the injected page or the control popup?

[philipmulcahy]

small win today: with merge of 381_cache_years_2 into master, (6a5eb8d),
background.ts no longer knows about periods or years