#1147 Drop SingleFilePersistenceHandler in favor of DistributedFilesPersistenceHandler

- Remove SingleFilePersistenceHandler: DistributedFilesPersistenceHandler with segment size 1 can be used instead
- Rename  SegmentFilesPersistenceHolder to DistributedFilesPersistenceHandler
- Rename SeparateFilePersistenceHandler to IndividualFilesPersistenceHandler to match LimboPersistenceType entry
- Add link to limbo page on Wiki in the settings

src/test/java/fr/xephi/authme/data/limbo/persistence/DistributedFilesPersistenceHandlerTest.java

@@ -37,10 +37,10 @@ import static org.mockito.BDDMockito.given;
 import static org.mockito.Mockito.mock;
 
 /**
- * Test for {@link SegmentFilesPersistenceHolder}.
+ * Test for {@link DistributedFilesPersistenceHandler}.
  */
 @RunWith(DelayedInjectionRunner.class)
-public class SegmentFilesPersistenceHolderTest {
+public class DistributedFilesPersistenceHandlerTest {
 
     /** Player is in seg32-10110 and should be migrated into seg16-f. */
     private static final UUID MIGRATED_UUID = fromString("f6a97c88-7c8f-c12e-4931-6206d4ca067d");
@@ -70,7 +70,7 @@ public class SegmentFilesPersistenceHolderTest {
 
 
     @InjectDelayed
-    private SegmentFilesPersistenceHolder persistenceHandler;
+    private DistributedFilesPersistenceHandler persistenceHandler;
 
     @Mock
     private Settings settings;

src/test/java/fr/xephi/authme/data/limbo/persistence/IndividualFilesPersistenceHandlerTest.java

@@ -30,16 +30,16 @@ import static org.mockito.BDDMockito.given;
 import static org.mockito.Mockito.mock;
 
 /**
- * Test for {@link SeparateFilePersistenceHandler}.
+ * Test for {@link IndividualFilesPersistenceHandler}.
  */
 @RunWith(DelayedInjectionRunner.class)
-public class SeparateFilePersistenceHandlerTest {
+public class IndividualFilesPersistenceHandlerTest {
 
     private static final UUID SAMPLE_UUID = UUID.nameUUIDFromBytes("PersistenceTest".getBytes());
     private static final String SOURCE_FOLDER = TestHelper.PROJECT_ROOT + "data/backup/";
 
     @InjectDelayed
-    private SeparateFilePersistenceHandler handler;
+    private IndividualFilesPersistenceHandler handler;
 
     @Mock
     private BukkitService bukkitService;