Bugfix (show-)gridallocation

We need to stay in the limits of the allocation array
Experimental option 'ignoreeof' (remove \n)

This replaces newlines from the data source by a space character.
Create error with <Message error="yes" />

Now it's possible to create an error instead of a message when
error is set to yes on command Message.
Timeout on sp

sp --timeout 10 will run at most 10 seconds. Can be configured
in the configuration file.
Command Box allocates space

Now we create a hbox/vbox with size of the requested area so it really
gets allocated on the grid.
Margin bottom for text formats