I.e. removed the colon after the ITEM#. Updated tasks are now listed like the 'todo.sh ls' command does, e.g.
42 smell the roses
This is in preparation to eventually use a function factored out from _list() for the verbose task output, which would enable coloring in the verbose message and thus align the verbose message output even more with the normal task output.
- _list() now shows the capitalized filename in place of 'TODO:'.
For example, listing garden.txt produces a output prefixed by 'GARDEN:'
This eliminates the ' from $FILE' part of the _list() output. All tests
were adjusted to match this new output.
