Changes as suggested by @Ghostkeeper in https://github.com/Ultimaker/Cura/pull/1350#pullrequestreview-17836965

resources/definitions/renkforce_rf100.def.json

@@ -1,14 +1,13 @@
 {
     "id": "RF100",
     "version": 2,
-    "name": "renkforce RF100",
+    "name": "Renkforce RF100",
     "inherits": "fdmprinter",
     "metadata": {
         "author": "Simon Peter (based on RF100.ini by Conrad Electronic SE)",
         "category": "Other",
         "file_formats": "text/x-gcode",
-        "manufacturer": "renkforce",
-        "platform_offset": [0, 0, 0],
+        "manufacturer": "Renkforce",
         "visible": true
     },
 
@@ -17,7 +16,7 @@
             "default_value": "skirt"
         },
         "bottom_thickness": {
-            "default_value": 0.5
+            "value": 0.5
         },
         "brim_line_count": {
             "default_value": 20.0
@@ -44,26 +43,17 @@
             "default_value": 10.0
         },
         "infill_before_walls": {
-            "default_value": 1.0
+            "default_value": true
         },
         "infill_overlap": {
             "default_value": 15.0
         },
-        "infill_sparse_density": {
-            "default_value": 15.0
-        },
         "layer_0_z_overlap": {
             "default_value": 0.22
         },
-        "layer_height": {
-            "default_value": 0.1
-        },
         "layer_height_0": {
             "default_value": 0.3
         },
-        "line_width": {
-            "default_value": 0.4
-        },
         "machine_depth": {
             "default_value": 100
         },
@@ -77,10 +67,7 @@
             "default_value": 100
         },
         "machine_name": {
-            "default_value": "renkforce RF100"
-        },
-        "machine_nozzle_size": {
-            "default_value": 0.4
+            "default_value": "Renkforce RF100"
         },
         "machine_start_gcode": {
             "default_value": ";Sliced at: {day} {date} {time}\nG21 ;metric values\nG90 ;absolute positioning\nM82 ;set extruder to absolute mode\nM107 ;start with the fan off\nG28 X0 Y0 ;move X/Y to min endstops\nG28 Z0 ;move Z to min endstops\nG1 Z15.0 F{speed_travel} ;move the platform down 15mm\nG92 E0 ;zero the extruded length\nG1 F200 E3 ;extrude 3mm of feed stock\nG92 E0 ;zero the extruded length again\nG1 F{speed_travel}\nM117 Printing..."
@@ -89,14 +76,11 @@
             "default_value": 100
         },
         "material_bed_temperature": {
-            "default_value": 70.0
+            "visible": false
         },
         "material_diameter": {
             "default_value": 1.75
         },
-        "material_flow": {
-            "default_value": 100.0
-        },
         "material_print_temperature": {
             "default_value": 210.0
         },
@@ -217,15 +201,5 @@
         "wall_thickness": {
             "default_value": 0.8
         }
-    },
-
-    "categories": {
-        "material": {
-            "settings": {
-                "material_bed_temperature": {
-                    "visible": false
-                }
-            }
-        }
     }
 }