getFeatureInfo examples: listen to click events

This make the examples works on touch devices.
Merge pull request #727 from fredj/mobile-featureinfo

getFeatureInfo examples: listen to click events
geolocation example: suppresses line breaks in tooltip
Remove stray end tag fieldset
Add a resolution input
Merge pull request #728 from fredj/cleanup

Examples cleanup
Fixing bug in tests

That's what you get from copying and pasting and forgetting to
modify the pasted lines to suit your needs.
Merge pull request #730 from ahocevar/fix-rtree-tests

Fixing bug in tests