slight tidy up of the alignment table renderer.
slight tidy up of the alignment table renderer.

tgvaughan/beast2,tgvaughan/beast2,CompEvol/beast2,Anaphory/beast2,tgvaughan/beast2,Anaphory/beast2,CompEvol/beast2,CompEvol/beast2,tgvaughan/beast2,CompEvol/beast2,Anaphory/beast2,Anaphory/beast2