Updated _list() output to match updated addto. Adjusted tests to match.

- _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.

todo.sh

@@ -590,11 +590,13 @@ _list() {
     echo -ne "$filtered_items${filtered_items:+\n}"
 
     if [ $TODOTXT_VERBOSE -gt 0 ]; then
+        BASE=$(basename "$FILE")
+        PREFIX=$(echo ${BASE%%.[^.]*} | tr [a-z] [A-Z])
         NUMTASKS=$( echo -ne "$filtered_items" | sed -n '$ =' )
         TOTALTASKS=$( echo -ne "$items" | sed -n '$ =' )
 
         echo "--"
-        echo "TODO: ${NUMTASKS:-0} of ${TOTALTASKS:-0} tasks shown from $FILE"
+        echo "${PREFIX}: ${NUMTASKS:-0} of ${TOTALTASKS:-0} tasks shown"
     fi
     if [ $TODOTXT_VERBOSE -gt 1 ]
     then