Add ability to identify contracts by description

[Amit-Weiss]

Is your feature request related to a problem? Please describe.
Currently, when we look at contracts we can only refer to them using their addresses.

Describe the solution you'd like
It would be more convenient if we could add a text to each contract, so when we look at our contracts we will see the description of it.

Describe alternatives you've considered
Another option is to add a field to the contract itself, that will be updated by initiator and will be managed on the blockchain. I find this idea not as good since it adds overhead of writing to the blockchain.

Additional context
I believe the description should be unique to each party, such that the initiator and the counterpart will be able to set different names.

Note 1: This text should not be kept on the blockchain.

Note 2: This issue was edited to fit the new "feature request" template.