Fixed OemProfile Tests

- Broke up Altair and Poetry Infinity printers into separate printers based on nozzle diameter
 - fixed simple, simple metal, and MendalMax to have Layer heights less than their Nozzle Diameter on coarse settings
 - fixed printer config's oem property to be the name of its directory rather than its parents (was always profiles)
 - changed minimumLayerHight to maximumLayeHeight to reflect what the value actually represented
 - removed fix needed categories

StaticData/Profiles/Printrbot/Simple Metal.printer

@@ -154,7 +154,7 @@
     {
       "layer_name": "Fast",
       "layer_id": "547dc1f9-fad8-4fc7-aeb3-d57a420b4a16",
-      "layer_height": "0.4"
+      "layer_height": "0.35"
     },
     {
       "layer_name": "Fine",

StaticData/Profiles/Printrbot/Simple.printer

@@ -135,7 +135,7 @@
     {
       "layer_name": "Fast",
       "layer_id": "feffd006-363f-400f-8ef6-3c51775b9d29",
-      "layer_height": "0.4"
+      "layer_height": "0.35"
     },
     {
       "layer_name": "Fine",