Fix commands for buffers whose fullname contain whitespace

Use pointers if Weechat version is recent enough (1.0+).
Otherwise, not marking stuff as read is probably the lesser evil than crashing weechat...

js/connection.js

@@ -246,7 +246,7 @@ weechat.factory('connection',
      */
     var sendMessage = function(message) {
         ngWebsockets.send(weeChat.Protocol.formatInput({
-            buffer: models.getActiveBuffer().fullName,
+            buffer: models.getActiveBufferReference(),
             data: message
         }));
     };

js/models.js

@@ -451,6 +451,22 @@ models.service('models', ['$rootScope', '$filter', function($rootScope, $filter)
         return activeBuffer;
     };
 
+    /*
+     * Returns a reference to the currently active buffer that
+     * WeeChat understands without crashing, even if it's invalid
+     *
+     * @return active buffer pointer (WeeChat 1.0+) or fullname (older versions)
+     */
+    this.getActiveBufferReference = function() {
+        if (this.version !== null && parseInt(this.version.charAt(0)) >= 1) {
+            // pointers are being validated, they're more reliable than
+            // fullName (e.g. if fullName contains spaces)
+            return activeBuffer.id;
+        } else {
+            return activeBuffer.fullName;
+        }
+    };
+
     /*
      * Returns the previous current active buffer
      *