Added mac screenshots for installing java

howto/images/mac_01_check_false.png

howto/images/mac_02_check_false.png

howto/images/mac_03_extract.png

howto/images/mac_04_move.png

howto/images/mac_05_env01.png

howto/images/mac_06_env02.png

howto/images/mac_07_apply_env.png

howto/images/mac_08_env03.png

howto/images/mac_09_check_true.png