Quality of life improvments/little things

[roxlukas]

By Devlin Shardo:

• In the tasks window. I'd really want a way to sort the jobs by type, quantity and progress.
• I'd also like to see the jobs not disappear when done, but rather see a history of my jobs that are done(this month)
• Perhaps having a separator for, invention, manufacturing, copy, and research. If the sorting is out of question..
• In the tasks window, under 'Currently in progress'. I'd like it if it shows how many of the thing its manufacturing.
• In the 'Buy calculator'. If there is a final checkout prompt. And a way to cancel delete orders you've made

[roxlukas]

Point 2) I'd also like to see the jobs not disappear when done, but rather see a history of my jobs that are done(this month)

was also referenced in #59

functionality added in ca86169