Bug Fix - Att::match

- Fixed bug in Att::match that causes blank dates to be interpreted
  as 12/31/1969, and therefore pass "xxx.before:" tests.
- Added the "cal" symlink trick to ChangeLog.
- Removed incorrect i18n tags from Config.cpp.
- Allowed .taskrc:confirmation=no to bypass Permission checking.

src/Permission.cpp

@@ -26,14 +26,20 @@
 ////////////////////////////////////////////////////////////////////////////////
 
 #include "Permission.h"
+#include "Context.h"
 #include "util.h"
 #include "i18n.h"
 
+extern Context context;
+
 ////////////////////////////////////////////////////////////////////////////////
 Permission::Permission ()
 : needConfirmation (false)
 , allConfirmed (false)
 {
+  // Turning confirmations off is the same as entering "all".
+  if (context.config.get ("confirmation", true) == false)
+    allConfirmed = true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////