add realtime altitude-chart
Merge pull request #23 from SuperTux88/charts

add realtime altitude-chart
save settings in local storage
save zoomlevel to settings
Merge pull request #24 from SuperTux88/settings

Settings
move follow-aircraft-button to map and auto-unfollow :)
Merge pull request #25 from SuperTux88/mapCenter

move follow-aircraft-button to map and auto-unfollow :)
hide sidebar
Merge pull request #26 from SuperTux88/sidebar

hide sidebar
change chart colors and range-function
tinyimp
Merge pull request #27 from fbe/tiny-imp

tinyimp
remove todo ;)
Merge pull request #28 from SuperTux88/chart

change chart colors and range-function
initialize values + new chart-range-function
refactoring html (canvas width, merge spans)
Merge pull request #29 from SuperTux88/refactoring

Refactoring
release v1.1
prepare v1.2-SNAPSHOT
improve hide/show button