Added remark style and basic layout for help activity.
Added help strings for german.
Added correct layout views to help activity.
Added screenshots to help activity.
Added empty NL-strings for help.
Fixed help topic visibility toggle.
Changed Styles for remark texts.
Changed remark style.
Changed description and name of route #5 (navigation).
Merge branch 'feature/content/help' into develop

Conflicts:
	application_projekt/res/values-nl/strings.xml
Removed all unused drawables.
Added ScrollView to LegalActivity for too large texts.
Removed unused files.