cubicweb #1772121 Separate command list for commands coming from ccplugins [open]

It would be useful to separate the list of base framework commands from the commands introduced by cubes (through ccplugin). The origin of the command could be added at the end of the description in brackets.

The following

add-source       Add a data source to an instance
create           Create an instance from a cube
mysuperimport    Import some super thing
...

Would become

add-source       Add a data source to an instance
create           Create an instance from a cube
...

cubes commands :
mysuperimport    Import some super thing [from cubes.mycube]
prioritynormal
typeenhancement
done in<not specified>
closed by<not specified>