Swipe to remove items on the list

- Add a swipe listener to remove items on the list
- Change listview transcript mode
- Remove long press listener

/cc @nesquena - last modification before 4th June class!

![swipe-to-remove](https://cloud.githubusercontent.com/assets/1507064/3137660/a91bb644-e859-11e3-9248-1231bbaf422a.gif)