OPAL-2140 - implemented Create Key Pair model and started the EncryptionKeys MVP
OPAL-2138: Save keystore when creating or updating a KeyEntry
OPAL-2139: Create key pair functionnality.
Merge pull request #370 from emorency/OPAL-2139-Download-Certificate

OPAL-2139: Create key pair functionnality with commit from Ramin