deploy to heroku
add logger to invalid_login
fix csrf error in register_user
fix creation of user accounts and user authentification
	modified:   LifeTracker/settings.py
fix save in ActivityForm and ActivityInstanceForm
fix indent in activity/forms.py
fix ActivityInstanceForm. Fix timedelta calculation
fix activityInstance_detail html page
	modified:   LifeTracker/templates/accounts_home.html
	modified:   README.md
	modified:   activity/admin.py
	modified:   activity/admin.pyc
	modified:   activity/models.py
	modified:   activity/models.pyc
	modified:   activity/templates/activity_list.html
	deleted:    activity/templates/home.html
	modified:   activity/templates/rateActivity_detail.html
	modified:   activity/urls.py
	modified:   activity/urls.pyc
	modified:   activity/views.py
	modified:   activity/views.pyc