Revert "make touch device events work on buttons (closes foodcoop-rostock/foodsoft#34, closes foodcoops/foodsoft#104)"

This reverts commit add4afd172e2e4674a0617f8dae56b1a8e8b5513.

Conflicts:
	app/assets/javascripts/application.js
make click work better on touch devices (closes foodcoops#104)
Merge pull request #257 from wvengen/feature-touchclick

Better workaround for touch devices