hgweb: split some long lines in paper, gitweb and monoblue styles This will ease future patches for the templates. As a result of this patch, paper style has one visual change in log/shortlog/file log view: the spacing between commit message and the first tag (or branch name, or bookmark) is now roughly who spaces wide instead of one space wide. This spacing is consistent with the one between branch names/tags/bookmarks themselves, so it looks better. In gitweb style, the change from non-breakable space to regular space is consistent with other elements. In monoblue the change is not noticeable.