Fix fill-alignment export/import to and from ODF. [part of #726035]

2014-03-11  Andreas J. Guelzow <aguelzow@pyrshep.ca>

	* openoffice-read.c (oo_style_end): set alignment once
	(odf_style_set_align_h): use repeat_content even if the
	source is not set to 'fix'
	(oo_style_prop_cell): don't set teh alignment here
	* openoffice-write.c (odf_write_cell): write a string-value
	if repeat-content will be set to true