[gcmd-dev] remember tab - forget tab

[Michael]

There seems to be a problem when gcmd tries to re-establish a saved tab which 
path does no more exist. I had a backup disk mounted, temporarily, but when i 
started gcmd the other day, it refused to launch with 'permission denied'. I 
had to remove that path from the config (xml) manually.

gcmd should not hesitate to launch even if a tab can't be established. A tab 
with such a vanished path should just be omitted. If a pane would end up w/o 
any possible tab, then it should establish a default one (probably $HOME).
How about it ?