优化内存分享，修复一些问题，新增答题投票功能

cmonitor/client/reports/active/ActiveWindowLinux.cs

@@ -0,0 +1,26 @@
+namespace cmonitor.client.reports.active
+{
+    public sealed class ActiveWindowLinux : IActiveWindow
+    {
+        public void DisallowRun(string[] names)
+        {
+
+        }
+
+        public ActiveWindowInfo GetActiveWindow()
+        {
+            return new ActiveWindowInfo();
+        }
+
+        public int GetWindowCount()
+        {
+            return 0;
+        }
+
+        public Dictionary<uint, string> GetWindows()
+        {
+            return new Dictionary<uint, string>();
+        }
+
+    }
+}