RCCN shell functions, fixup chans() display

There can be commas in some field data output by fs show channels,
so pass the output through sed to strip that and prepare for csvcut.

modules/rhizo_base/templates/rccn-functions.sh.erb

@@ -15,7 +15,7 @@ waitfor0calls () {
 chans () {
   while [ 1 == 1 ]
   do
-    _output=`fs_cli -x 'show channels' | csvcut -c 3,2,6,8,10,11,13,15,18 | csvlook -I`
+    _output=`fs_cli -x 'show channels' | head -n -3 | sed -E 's/\{([^,]*),([^}]*)}/{\1\2}/' | csvcut -c 3,2,6,8,10,11,13,15,18 | csvlook -I`
     clear
     echo  "$_output"
     sleep 1