Add a script to make purchasing tickets and spending entries
Fix make_purchase to use the actual SR server

I'd accidentally left it using a debug setup, using my own machine
Add a script to add cheque numbers to spending transactions
Improve the accuracy of the items request in make_purchase
Fix a variable issue in make_purchase
Add checking of the budget lines to make_purchase
Add a script to compare trac spending tickets against spending.git

Relies on the tickets being generated by make_purchase
Check for running in top level of spending.git
Change to line separated item input when making a purchase
Print out increase over budget when making a purchase