Preliminary work a richer (than LatLong) GeoLocation class

...re/src/main/java/tdt4140/gr1800/app/core/GeoLocation.java

...e/src/main/java/tdt4140/gr1800/app/core/GeoLocations.java

...pp.core/src/main/java/tdt4140/gr1800/app/core/Tagged.java

.../app.core/src/main/java/tdt4140/gr1800/app/core/Tags.java

...app.core/src/main/java/tdt4140/gr1800/app/core/Timed.java

...core/src/main/java/tdt4140/gr1800/app/core/TimedImpl.java

...rc/main/java/tdt4140/gr1800/app/core/TimedTaggedImpl.java

...rc/test/java/tdt4140/gr1800/app/core/GeoLocationTest.java

...c/test/java/tdt4140/gr1800/app/core/GeoLocationsTest.java

...rc/test/java/tdt4140/gr1800/app/core/TimedTaggedTest.java