created branch for stable version
run PO update
Revised DiD translation
spelling and grammar fixes
initial commit of the release announcenment
proofreading of wesnoth-tb
replaced cç constructs with simple ç

this may not be entirely accurate, but comes pretty close
to the new ortography norm
added localized images (just in case)
mostly translated the release announcenments
unfuzzied remaining strings
tutorial, manpages and delfadors memoirs
tweaked ei map
updated umc
alibi translation in wesnoth-ai
consistency check Knalga > Gnalga
spelling: objectivo > objetivo
ortography: replaced single dashes with em dashes
fixup quotes
spelling: seleccionado > selecionado
spelling: actual > atual