Add values to surface (#1198)

Author: michalgwo

data/fields/surface.json

@@ -6,20 +6,26 @@
         "options": {
             "artificial_turf": "Artificial Turf",
             "asphalt": "Asphalt",
+            "clay": "Clay",
             "compacted": "Compacted",
             "concrete": "Concrete",
+            "concrete:lanes": "Concrete Lanes",
+            "concrete:plates": "Concrete Plates",
             "dirt": "Dirt",
             "fine_gravel": "Fine Gravel",
             "grass": "Grass",
+            "grass_paver": "Grass Paver",
             "gravel": "Gravel",
             "ground": "Ground",
             "metal": "Metal",
             "mud": "Persistently Muddy",
             "paved": "Paved",
             "paving_stones": "Paving Stones",
+            "pebblestone": "Pebblestone",
             "salt": "Salt",
             "sand": "Sand",
             "sett": "Sett",
+            "tartan": "Tartan",
             "unhewn_cobblestone": "Cobblestone (uncut, rounded stones)",
             "unpaved": "Unpaved",
             "wood": "Wood",