po/eo.po and po/et.po is not updated from Transifex. I am guessing that eo and et was at one point downloaded but then the procentage of translation fell below a set limit and then they are not being downloaded causing the old files in git not to be updated since 2012. If Xfce use such a cut off limit where it will not download translations that are below X procentage translated then maybe better to not have such po files in the source rather then having some old stuff.
Skunnyk referenced this bugreport in commit bd45e4905e3d8b9ef507a5386c5d74867323664f Delete obsolete et.po Bug #15547) https://gitlab.xfce.org/panel-plugins/xfce4-places-plugin/commit/bd45e4905e3d8b9ef507a5386c5d74867323664f
Skunnyk referenced this bugreport in commit f70f88135caf0d08dfb56ad1635885553f98658e Delete obsolete eo.po https://gitlab.xfce.org/panel-plugins/xfce4-places-plugin/commit/f70f88135caf0d08dfb56ad1635885553f98658e