Merge pull request #415 from filipedelimabrito/ux

[FIX] Fix the screen dimming when sliding in rooms with one message

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

@@ -2,7 +2,8 @@
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/messageListRelativeLayout"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    android:background="@android:color/white">
 
     <android.support.v7.widget.RecyclerView
       android:id="@+id/messageRecyclerView"

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

@@ -5,7 +5,6 @@
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:orientation="vertical"
-    android:background="@android:color/white"
     android:theme="@style/AppTheme">
 
     <include layout="@layout/list_item_message_newday" />

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

@@ -5,7 +5,6 @@
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:orientation="vertical"
-    android:background="@android:color/white"
     android:theme="@style/AppTheme">
 
     <include layout="@layout/list_item_message_newday" />