Add an option to show passwords by default.

Closes #93

src/core/Config.cpp

@@ -98,6 +98,7 @@ void Config::init(const QString& fileName)
     m_defaults.insert("security/clearclipboardtimeout", 10);
     m_defaults.insert("security/lockdatabaseidle", false);
     m_defaults.insert("security/lockdatabaseidlesec", 10);
+    m_defaults.insert("security/passwordscleartext", false);
 }
 
 Config* Config::instance()