in feed: add token for authorized request, plus better descriptions

src/db/tables/accounts.ts

@@ -3,6 +3,8 @@ export type Account = {
   dateCreated: string;
   derivationPath: string;
   did: string;
+  // stringified JSON containing underlying key material of type IIdentifier
+  // https://github.com/uport-project/veramo/blob/next/packages/core-types/src/types/IIdentifier.ts
   identity: string;
   publicKeyHex: string;
   mnemonic: string;