Update def.json and STL file

Updated JSON file:
- changed machine center is zero to true
- added turn heated bed off to end g code
- changed top/bottom thickness from 0.3 to 1.2mm
- added machine preferences as I did in 2.1 (is this still used?)

Updated STL file.  The last file was 13mb! this one is 810kb!

resources/definitions/innovo_inventor.def.json

@@ -27,7 +27,7 @@
             "default_value": true
         },
         "machine_center_is_zero": {
-            "default_value": false
+            "default_value": true
         },
         "machine_nozzle_size": {
             "default_value": 0.4
@@ -56,7 +56,7 @@
             "default_value": "G28 ; Home extruder\nM107 ; Turn off fan\nG90 ; Absolute positioning\nM82 ; Extruder in absolute mode\n{IF_BED}M190 S{BED}\n{IF_EXT0}M104 T0 S{TEMP0}\n{IF_EXT0}M109 T0 S{TEMP0}\n{IF_EXT1}M104 T1 S{TEMP1}\n{IF_EXT1}M109 T1 S{TEMP1}\nG32 S3 ; auto level\nG92 E0 ; Reset extruder position"
         },
         "machine_end_gcode": {
-            "default_value": "M104 S0\nG91 ; relative positioning\nG1 E-2 F5000; retract 2mm\nG28 Z; move bed down\nG90 ; absolute positioning\nM84   ; disable motors"
+            "default_value": "M104 S0\nM140 S0 ; heated bed heater off\nG91 ; relative positioning\nG1 E-2 F5000; retract 2mm\nG28 Z; move bed down\nG90 ; absolute positioning\nM84   ; disable motors"
         },
         "layer_height": {
             "default_value": 0.15
@@ -65,7 +65,7 @@
             "default_value": 0.8
         },
         "top_bottom_thickness": {
-            "default_value": 0.3
+            "default_value": 1.2
         },
         "material_print_temperature": {
             "default_value": 215
@@ -95,5 +95,9 @@
         "infill_overlap": {
             "default_value": 10.0
         }
-    }
+    },
-}
+    "machine_preferences": {
+              "prefered_profile": "Normal Quality",
+              "prefered_material": "PLA"
+      }
+}