Tweak default parameters

1.  Change default ensure_vertical_shell_thickness value back to ensure_all as suggested by @igiannakas
2.  Change default sparse_infill_pattern vaule to ipCrossHatch

resources/profiles/Wanhao/process/fdm_process_common.json

@@ -18,7 +18,7 @@
     "line_width": "0.45",
     "infill_direction": "45",
     "sparse_infill_density": "15%",
-    "sparse_infill_pattern": "grid",
+    "sparse_infill_pattern": "crosshatch",
     "initial_layer_line_width": "0.42",
     "initial_layer_print_height": "0.2",
     "initial_layer_speed": "20",
@@ -57,7 +57,7 @@
     "support_base_pattern": "rectilinear",
     "support_base_pattern_spacing": "2",
     "support_speed": "40",
-    "support_threshold_angle": "40",
+    "support_threshold_angle": "30",
     "support_object_xy_distance": "0.5",
     "detect_thin_wall": "0",
     "top_surface_line_width": "0.4",

resources/profiles/Wanhao/process/fdm_process_wanhao_common.json

@@ -27,7 +27,7 @@
     "line_width": "0.4",
     "infill_direction": "45",
     "sparse_infill_density": "15%",
-    "sparse_infill_pattern": "grid",
+    "sparse_infill_pattern": "crosshatch",
     "initial_layer_acceleration": "500",
     "travel_acceleration": "700",
     "inner_wall_acceleration": "500",