Actually run shell tests (#3583)

Two of these used EXPFAIL which, because nothing is interpreting the TAP
output, does not work. So, that functionality is removed, and the
expected-to-fail bits are commented out or removed.

There was a conditional on the filename in `bash_tap.sh` which caused it
to not actually do anything and just run the test as a simple shell
script. That, too, has been removed.

test/bash_tap_tw.sh

@@ -13,7 +13,7 @@
 
 function setup_taskrc {
     # Configuration
-    for i in pending.data completed.data undo.data backlog.data taskrc; do
+    for i in taskchampion.sqlite3 taskrc; do
        if [ -f "$i" ]; then
            rm "$i" 2>&1 >/dev/null
        fi
@@ -26,6 +26,7 @@ function setup_taskrc {
     echo 'color.header=rgb025'            >> taskrc
     echo 'color.footer=rgb025'            >> taskrc
     echo 'color.error=bold white on red'  >> taskrc
+    echo 'news.version=99.0.0'            >> taskrc
 }
 
 function find_task_binary {