Update/fix "standard" functional test sample.
Revert [r9902] (right align code line numbers with CSS).
LaTeX writer: stop requiring "ifthen.sty", fix Babel warning.
Use `nodes.parse_measure()` in rST directive option conversion.
Update documentation around length specifications.
ODT writer: report warnings with source line.
Revise/fix handling of length specification in the ODT writer.
Revise/fix handling of length specifications.