Enable reload of upcoming events from HomeScreen

Change-Id: I28c2bb9bd75ee49882a3a58f803ad889ec1d052e
Reviewed-by: Niels Weber <niels.weber@digia.com>
Small fix in TweetModel

jsonResponse is not defined in reload()

Change-Id: I1bd9718d0a33594cb2ac05452528bbbdd3b37d9f
Reviewed-by: Niels Weber <niels.weber@digia.com>