Upgrade plugins management and install source code in setup.py

Change-Id: I7dde8361678bb32a1353ee2523c5e8ad7fd9ed49
Change default bpfFilter in PCAPImporter
Remove unecessary import in AbstractValue
Correct UI update in ContextualMenuOnFieldController
Simplify dupplication of Field
Add netzob.all module that permits to import all Netzob objects
Merge branch 'master' into next