Added custom HttpClient
Added permission
Added check for network connectivity
Added warning dialog to startup without connection
The TodayFragment now updates itself based on the network state.
Feed Fragment will not replace it's delicious set of items with an empty set.
The Statistics Adapter no longer nullifies it's set of course votes when it finds itself decolated from the webs
Added string values for no network connectivity
Added no internet-tutorial to today fragment
Added no internet-tutorial to FeedFragment. Also made clicks on list items disabled when no connection.
Made TodayFragment list items disabled when no network
Made StatisticsFragment not support clicks on list items when no connection