Debloat ConversationAdapter's tag

getName() includes the full package name, which adds a ridiculous
amount of text to the debug log. Using getSimpleName() is in line with
the rest of the repository.

Closes #6202
// FREEBIE

src/org/thoughtcrime/securesms/ConversationAdapter.java

@@ -72,7 +72,7 @@ public class ConversationAdapter <V extends View & BindableConversationItem>
 {
 
   private static final int MAX_CACHE_SIZE = 40;
-  private static final String TAG = ConversationAdapter.class.getName();
+  private static final String TAG = ConversationAdapter.class.getSimpleName();
   private final Map<String,SoftReference<MessageRecord>> messageRecordCache =
       Collections.synchronizedMap(new LRUCache<String, SoftReference<MessageRecord>>(MAX_CACHE_SIZE));