update to devexpress 15.2.16, add logger, add config

app/DD_Clipboard_Searcher/ClassConfig.vb

@@ -0,0 +1,9 @@
+Imports DigitalData.Modules.Config.ConfigAttributes
+
+Public Class ClassConfig
+    <ConnectionString>
+    Public Property ConnectionString As String = ""
+    Public Property LogErrorsOnly As Boolean = True
+    Public Property HotkeyFunctionKey As String = "strg"
+    Public Property HotkeySearchKey As String = "f"
+End Class