Issue #2830239 by cebasqueira, imalabya, spitzialist, th_tushar, monta, benjifisher, faline, alexpott: Several URLs point to  Drupal 7 documentation pages instead of Drupal 8

Issue #2852665 by Rajender Rajan, monta, arshadcn, Vj, dpc-vic, ivrh, rajibmp: No validation on text length for menu description when editing node

- Patch #764428 by aaronmontana: user_validate_picture() is undocumented; user_account_form() validation functions missing @see links.