Now possible to configure each group in the categories.yaml. Only color
added at this moment. The order in which the groups are listed is used
by the graph module and will later be used by the report.
Fixes search for vacations. The negative match is now done by groups,
and the key changes from negative_regex to not_in_groups.
Only updates transactions when any travel is assigned. Was previously
updating all uncategorized transactions that reached the travel search.
Regex match now correctly done lower letters to lower letters.
Transaction __repr__ method added and updated along with __str__, to
provide a more clearer output when manually categorizing.
Luís Murta
865874f637
