show osm attribution in hike detail view and margin adjustments

limit elevation profile to min and max altitude and animate it!

replace graphview lib with a more flexible.

display elevation profile in hike detail view, fix #46

add graphview for elevation profile

add difficulty indicator

add flooring and elevation profile to hike (and display), ref #12

add missing translation

hike display and detail improvements, ref #12

display (currently all) hikes in dialog

add hike points to db

reorder poi handling to enable hikes

use gpId to get associated POI of an image

remove finished todo

add hike menu, currently only recording works, ref #12

various code improvements and fixes

removed old position marker code

beautify current position handling

more poi logging

remove geopoint if it is no longer used, fix #42

implement getForecastCachedHour, fix #41

hour forecast download improvements

add hour forecast download

fix getForecastCached

finish getForecastCached, ref #21

move roadmanager network calls to own class, ref #21

store main and desc from OWM and display desc in weather header, ref #21

don't store main and desc from OWM, ref #21

use default constructors for dialogs, fix #38

moved license comment to the top of all source files, ref #25