Fix for touch screens opening items multiple times

Branch: danielrozenberg/in-my-pocket:no-double-tap
Branch: pabuisson/in-my-pocket:master
Merged
Merged pull request
Merged in no-double-tap (pull request #159)
Merged in no-double-tap (pull request #159)
Some touch screens cause Firefox to fire the
mouseup
event multiple times, each with an increased value for the MouseEvent.detail (always starting with 1, and then +1 for each extra event. This PR fixes this issue so that using a touch screen will not open the item n times