remove global usage of moment, implemente storageAbstraction to save userDate in localstorage
create track template
forgot .add() call when initializing a new activityGroup
typo in localstorage detection
add ability to end edit mode of activity when clicking somewhere
search the missing hour - correct parsing of edited times, to not loose one houer
remove some unnecessary code, documentation
remove edit-mode hack, add documentation, remove edit of duration