[doc,duim] Update year in copyright notice
[doc,duim] Improve cross linking in conventions
[doc,duim] Improve geometry module

- Fix the formatting of 3 functions
- Improve cross linking
[doc,duim] Improve extended geometry library
[doc,duim] Convert DCs library to the new format
[doc,duim] Convert Sheets module to the new format
[doc,duim] Use tables for class hierarchy