Added pull to refresh
Implemented long term cache: returns immediately cached response and fetch in the background the updated content
Fix broken link
Use generic listview adapter

Implemented a basic extended BaseAdapter to allow for more flexibility
when controlling ui update timing.
Merge pull request #215 from matthewsibigtroth/generic_list_view_adapter

Use generic listview adapter
Merge pull request #216 from dinhviethoa/long-term-cache

Implemented long term cache
Updated license with SVPullToRefresh
Ranging configuration, About page shows on first launch
Merge remote-tracking branch 'upstream/master' into ranging-about