Feature: Expense categories
Every expense you enter must belong to a category that works as the primary
classification of what the expense is, e.g. Travel or Milage.
You can specify not only the category name but also a "mobile alias" that can help
making the entry easier when typing is limited or restricted like it can be with a
mobile phone keypad.
Each category also features a default VAT that will help to suggest the right VAT
when you enter expenses and want to let the computer guess the correct VAT from just
entering the amount.
For each category that needs it you can specify sub-categories which is the same
as categories but one level deeper. This makes it possible to limit the primary list of
options with the ability to have further fine-grained detail on the categories.
