Use name rather than sector:name (#561)

data/fields/sector/name.json

@@ -1,6 +0,0 @@
-{
-    "key": "sector:name",
-    "type": "text",
-    "label": "Name",
-    "placeholder": "Dedicated name (if any)"
-}

data/presets/cemetery/sector.json

@@ -1,7 +1,7 @@
 {
     "icon": "maki-cemetery",
     "fields": [
-        "sector/name",
+        "name",
         "ref_sector"
     ],
     "geometry": [