Fixed and balanced hardness of blocks and put in harvest levels.

src/main/java/blocks/category/BasicBlockGround.java

@@ -0,0 +1,16 @@
+package blocks.category;
+
+import net.minecraft.block.Block;
+import net.minecraft.block.material.Material;
+
+public class BasicBlockGround extends Block {
+
+    public BasicBlockGround(String name, Material material, float hardness, float resistance, int harvest) {
+        super(material);
+        setUnlocalizedName(name);
+        setRegistryName(name);
+        setHardness(hardness);
+        setResistance(resistance);
+        setHarvestLevel("shovel",harvest);
+    }
+}