Reactivate old graph editor, but not used by default
Basic setup for properties management
Add a nice title on the top of each property section
Add controls for table based properties
Fix default Shell getter
Implements basic control to edit network params
Display existing network params in the table
Improve read/write data management
Correctly print type in table
Write values to model in a specific transaction
Implements writing network parameters
Read and write values at a better moment
Allow double click to edit a table item
Prevent array out of bound when editing an item
PartialCalParser doesn't need StructTransformer anymore

StructTransformer works fine in a context of cal file parsing, but
it failed when we try to parse some alone string expressions
Implements network variables declarations
Implements instance parameters management
Refactoring

Instance Parameters become Instance Arguments. This is coherent with
call procedure (which defines parameters) and the call of this procedure
(which uses arguments)
When saving data in model, pass the origin widget to the method
Fix updateNeeded() for ports