wallet: add interface for storing generic data on destinations
[Qt] Permanently store requested payments in wallet
[Qt] Add sorting feature to the requested payments table
Merge pull request #3521

4d90102 [Qt] Add sorting feature to the requested payments table (Cozz Lovan)
8476d5d [Qt] Permanently store requested payments in wallet (Cozz Lovan)
b10e147 wallet: add interface for storing generic data on destinations (Wladimir J. van der Laan)