Cleans up permissions a lot and adds missing permissions to plugin.yml

Removes the checking of both parent and child by adding the child permissions to plugin.yml
Cleans comments in the PermissionHelper class
Renames hasPermDeep to hasPermissionImplicit as I finally understand how it's supposed to work
Adds missing unmock() to prevent test errors
Adds a ton of permissions which were mentioned in the code, but did not exist in the plugin.yml

src/test/java/net/knarcraft/stargate/portal/GateLayoutTest.java

@@ -6,6 +6,7 @@ import be.seeseemelk.mockbukkit.WorldMock;
 import net.knarcraft.stargate.Stargate;
 import net.knarcraft.stargate.container.RelativeBlockVector;
 import org.bukkit.Material;
+import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
 
@@ -27,6 +28,11 @@ public class GateLayoutTest {
         layout = GateHandler.getGateByName("nethergate.gate").getLayout();
     }
 
+    @AfterAll
+    public static void tearDown() {
+        MockBukkit.unmock();
+    }
+
     @Test
     public void gateLayoutExitTest() {
         assertEquals(new RelativeBlockVector(1, 3, 0), layout.getExit());