Add second extruder support and config for Lumentino board (2 extruders)

Hi. My electronics Lumentino (based on Gen7v1.3 and Gen7T) support two extruders. (http://cnc.maket-city.ru/index.php/cnc/lumentino/70-lumentino) I use Slic3r, which have some functions for control multiple extruders, as you know. So I made some changes and additions for the second extruder use. We may control both extruders from pronterface by changing extruders using T0/T1 commands (I use custom buttons for this). Also added T0/T1 flag for M104 command for Slic3r gcode. Pronterface correct show both temp extruder values by text, but not in Temp graph.