Should always attempt to ⎕CY'conga' as a fallback if a more specific location fails

[dyaandys]

Rather than looking in a specific location for the conga workspace and if it's not there failing, we should also try ⎕cy'conga' and then fail .. something along the lines of

:Trap 0
⎕CY dyalog,'ws/conga'
:Else
:Trap 0
⎕CY'conga'
:Else
'Unable to find conga.dws'⎕SIGNAL 666
:EndTrap
:EndTrap

Certainly in bd1513b