Update realtime check and refresh event, compress data using LZString UTF16 to minimize network delay

lib/realtime.js

@@ -69,6 +69,7 @@ function emitCheck(note) {
         authors: note.authors,
         authorship: note.authorship
     };
+    out = LZString.compressToUTF16(JSON.stringify(out));
     realtime.io.to(note.id).emit('check', out);
 }
 
@@ -310,7 +311,7 @@ function emitRefresh(socket) {
     var noteId = socket.noteId;
     if (!noteId || !notes[noteId]) return;
     var note = notes[noteId];
-    socket.emit('refresh', {
+    var out = {
         docmaxlength: config.documentmaxlength,
         owner: note.owner,
         ownerprofile: note.ownerprofile,
@@ -321,7 +322,9 @@ function emitRefresh(socket) {
         permission: note.permission,
         createtime: note.createtime,
         updatetime: note.updatetime
-    });
+    };
+    out = LZString.compressToUTF16(JSON.stringify(out));
+    socket.emit('refresh', out);
 }
 
 function clearSocketQueue(queue, socket) {