Add missing tool tip hint for disconnect button.

out/locale/en/LC_MESSAGES/default.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: HeidiSQL\n"
 "POT-Creation-Date: 2012-11-05 21:40\n"
-"PO-Revision-Date: 2013-02-18 08:25+0100\n"
+"PO-Revision-Date: 2013-02-19 10:19+0100\n"
 "Last-Translator: Ansgar Becker <heidisql@anse.de>\n"
 "Language-Team: English (http://www.transifex.com/projects/p/heidisql/"
 "language/en/)\n"
@@ -2221,6 +2221,10 @@ msgstr "Save contents to local file ..."
 msgid "Disconnect"
 msgstr "Disconnect"
 
+#. Disconnect hint
+msgid "Close selected database connection"
+msgstr "Close selected database connection"
+
 #. MainForm..ActionList1..actBatchInOneGo..Caption
 #: main.dfm:2540
 msgid "Send batch in one go"

source/main.dfm

@@ -2528,6 +2528,7 @@ object MainForm: TMainForm
     object actDisconnect: TAction
       Category = 'File'
       Caption = 'Disconnect'
+      Hint = 'Close selected database connection'
       ImageIndex = 29
       OnExecute = actDisconnectExecute
     end