svn ignore: ".project" files were missing from ignore list (command: "svn propset svn:ignore --file ~/svnignore *")

git-svn-id: https://languagetool.svn.sourceforge.net/svnroot/languagetool/trunk/languagetool@9550 2fe6a88b-1217-0410-b804-ba6ed01314b8