Implements support for ODF fo:text-align start and end in paragraph
styles. The new alignment options can be selected in the paragraph
dialog. Further user interface changes are tracked as separate bugs.
This change also adds START and END to css.style.ParagraphAdjust, which
is flagged as an incompatible UNO API change.
Change-Id: I2ee57f0029de7b794bc1ecd3eddbbd90af5dfdb9
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/192932
Tested-by: Jenkins
Reviewed-by: Jonathan Clark <jonathan@libreoffice.org>