Chat viewer: layout improvements. Send button null background. Avatar bottom aligned.

app/src/main/res/layout/chat_viewer_item.xml

@@ -58,7 +58,9 @@
         android:layout_alignParentBottom="true"
         android:layout_alignParentRight="true"
         android:layout_alignParentEnd="true"
+        android:padding="8dp"
         android:src="@drawable/ic_send_white_24dp"
+        android:background="@null"
         android:contentDescription="@string/chat_send" />
 
 </RelativeLayout>

app/src/main/res/layout/chat_viewer_message.xml

@@ -27,10 +27,9 @@
         android:layout_height="32dip"
         android:src="@drawable/avatar_1_1"
 
-        android:layout_marginTop="4dp"
-        android:layout_marginBottom="4dp"
-
-        />
+        android:layout_alignParentBottom="true"
+        android:layout_alignParentLeft="true"
+        android:layout_alignParentStart="true" />
 
     <TextView
         android:id="@+id/text"
@@ -55,8 +54,6 @@
         android:layout_marginStart="40dp"
         android:layout_marginLeft="4dp"
 
-        android:textColor="@android:color/primary_text_light"
-
         android:text="Some text\n line \nrgregrere"
 
         android:background="@drawable/msg_in"

app/src/main/res/layout/chat_viewer_message_own.xml

@@ -39,8 +39,6 @@
         android:layout_marginEnd="4dp"
         android:layout_marginRight="4dp"
 
-        android:textColor="@android:color/primary_text_light"
-
         android:text="Some text\n line \nrgregrere"
         android:background="@drawable/msg_out"
         android:gravity="end"