localrepo: remove 'closed' argument to heads(...) function - repository heads are not associated with the closed attribute, so remove it making the code in line with the concept. - Fix functions that were calling heads with the parameter. - Adjust webcommands.branches to include the concept of inactive as well as open and closed branches - Fix code and docstrings in commands to make the correct use of closed branches & branch heads clearer - Improve grammar of 'hg heads' help text (2nd submission) this does not alter the cli for hg branches, that work is still to be done