CodePaster: Add setting for expiry.

Add a setting for expiry in days and additional setting for
PasteView dialog which can be used to override.

Change-Id: Ie45e26b5cefd8f468d2f5c47df148cce582b201e
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

src/plugins/cpaster/urlopenprotocol.cpp

@@ -71,7 +71,7 @@ void UrlOpenProtocol::fetchFinished()
     emit fetchDone(title, content, error);
 }
 
-void UrlOpenProtocol::paste(const QString &, ContentType, const QString &,
+void UrlOpenProtocol::paste(const QString &, ContentType, int, const QString &,
                             const QString &, const QString &)
 {
 }