js: implement Key handling (1)

--

* Keys can now be queried for information. Onne version queries gnug
  directly (asynchronous Promise in javascript terms), the cached
  version refreshes on demand.

* Small fixes:
  src/Connection.js joins answers that stay json properly now

1 files changed, 3 insertions, 2 deletions

diff --git a/lang/js/src/Helpers.js b/lang/js/src/Helpers.js
index fd0e7200..b26f40fb 100644
--- a/lang/js/src/Helpers.js
+++ b/lang/js/src/Helpers.js
@@ -90,10 +90,11 @@ function hextest(key, len){
 export function isFingerprint(string){
     return hextest(string, 40);
 };
+
 /**
- *  TODO no usage; check if the input is a valid Hex string with a length of 16
+ *  check if the input is a valid Hex string with a length of 16
  */
-function isLongId(string){
+export function isLongId(string){
     return hextest(string, 16);
 };