2.6.1 Hotfix release
  v2.7.0 Maintenance release
  Adjust language selection
  Adjust Github links
  Split navigation and content in template
  Adjust Fix model for time range display in chart
  Fix last reading logic, consider timestamp if given
  Adjust accessible modules logic depending on session user
  Rework hook logic
  Adjust JSON routing
  Update README.md to new repo name
  Adjust frontend layout
  Adjust Github links
  Fix links to List view from Index and Overview
  Update README.md, add hint to post-merge hook gist
Fix menu links
Fix menu
Fix handling saved views
Merge branch 'hotfix/2.7.2' into develop