Additional logging when we can't decrypt a user's profile (#1483)

Found a number of 'Illegal buffer' errors in an Electron log submitted
today. As far as I can tell, these same profiles are succeedig for me,
so it's time to collect more data.

FREEBIE

js/models/conversations.js

@@ -816,7 +816,12 @@
                 // fail
                 if (e.name === 'ProfileDecryptError') {
                   // probably the profile key has changed.
-                  console.log('decryptProfile error:', e);
+                  console.log(
+                    'decryptProfile error:',
+                    id,
+                    profile,
+                    error && error.stack ? error.stack : error
+                  );
                 }
               });
             }.bind(this));
@@ -831,6 +836,7 @@
       var key = this.get('profileKey');
       if (!key) { return; }
 
+      try {
         // decode
         var data = dcodeIO.ByteBuffer.wrap(encryptedName, 'base64').toArrayBuffer();
 
@@ -843,6 +849,10 @@
           // set
           this.set({profileName: name});
         }.bind(this));
+      }
+      catch (e) {
+        return Promise.reject(e);
+      }
     },
     setProfileAvatar: function(avatarPath) {
       if (!avatarPath) { return; }