Moving the code in SightsMapFragment from onActivityCreated() to
onStart().

Created OnUserLocationChangedListener in order not to use an anonymous
class in SightsMapFragment, which makes the code of the latter
complicated
OnUserLocationChangedListener
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Merge branch 'master' of https://github.com/oles2008/Training.git

Conflicts:
	SightLocator/src/com/iolab/sightlocator/SightsMapFragment.java