Merged po & pot files to make gever ftw.recipe.translations compatible.

 *  Removed plone-manual.pot & ftw.tabbedview-manual.pot files.
 *  Merged plone.pot & ftw.tabbedview.pot files.
 *  Merged de / fr plone.po & ftw.tabbedview.po files.

@jone @lukasgraf