Directory structure:
- _includes and _layouts contain the HTML structure of the page
- _posts contains all blog posts
- _error contains the error pages
- _pages contain the main pages
- _v1 contains the old Kimai v1 sources
- _documentation contains the Kimai v2 documentation
- _data contains additional data files / collections that do not have a HTML page
- assets contains all the nifty frontend stuff - SASS, CSS, Javascript, Font and Icon files
- images contains ONLY images used in the content
For more info read the Jekyll documentation.