[FAB-8904] Make CCContext implement fmt.Stringer
[FAB-8904] Make CCContext implement fmt.Stringer

... and cleanup comments along the way

Change-Id: I8bdcffa4a5096cf985e00094f51eef2e26474842
Signed-off-by: Matthew Sykes <89c6e4c9c1046731a9c37abefc223a83de36a5d9@us.ibm.com>

stemlending/fabric,manish-sethi/fabric,xixuejia/fabric,manish-sethi/fabric-sidedb,jimthematrix/fabric,xixuejia/fabric,binhn/fabric,stemlending/fabric,muralisrini/fabric,hyperledger/fabric,manish-sethi/fabric-sidedb,xixuejia/fabric,manish-sethi/fabric-sidedb,manish-sethi/fabric-sidedb,manish-sethi/fabric-sidedb,manish-sethi/fabric-sidedb,jimthematrix/fabric,stemlending/fabric,hyperledger/fabric,binhn/fabric,muralisrini/fabric,muralisrini/fabric,manish-sethi/fabric,manish-sethi/fabric-sidedb,binhn/fabric,stemlending/fabric