added new icons and splash images from Feal, cleaning up old icons, still need more cleanup

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@7154 b45a01b8-16f6-495d-af2f-9b41ad6348cc
cleanup old icons

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@7155 b45a01b8-16f6-495d-af2f-9b41ad6348cc