Fix binary file output and eslint warnings

src/js/operations/PGP.js

@@ -297,7 +297,7 @@ var PGP = {
             }, {
                 fileName: "msg.sig",
                 size: rawSignatureBytes.length,
-                contents: "Binary file",
+                contents: openpgp.util.Uint8Array2str(rawSignatureBytes),
                 bytes: rawSignatureBytes,
             }];
 

test/tests/operations/PGP.js

@@ -443,5 +443,5 @@ PGP_TEST_KEY_PAIRS.forEach(function(keyPair) {
                 ],
             };
         })
-    )
+    );
 });