Add missing resources

app/src/main/res/menu/chatroom_actions.xml

 <?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
 
     <item
         android:id="@+id/action_members_list"
         android:title="@string/title_members_list"
-        app:showAsAction="never" />
+        android:showAsAction="never" />
 
     <item
         android:id="@+id/action_pinned_messages"
         android:title="@string/title_pinned_messages"
-        app:showAsAction="never" />
+        android:showAsAction="never" />
 
     <item
         android:id="@+id/action_favorite_messages"
         android:title="@string/title_favorite_messages"
-        app:showAsAction="never" />
+        android:showAsAction="never" />
 
     <item
         android:id="@+id/action_files"
         android:title="@string/msg_files"
-        app:showAsAction="never" />
+        android:showAsAction="never" />
 </menu>
\ No newline at end of file

app/src/main/res/menu/chatrooms.xml

@@ -6,13 +6,13 @@
         android:id="@+id/action_search"
         android:icon="@drawable/ic_search_white_24px"
         android:title="@string/action_search"
-        app:actionViewClass="androidx.appcompat.widget.SearchView"
-        app:showAsAction="ifRoom|collapseActionView" />
+        android:actionViewClass="androidx.appcompat.widget.SearchView"
+        android:showAsAction="ifRoom|collapseActionView" />
 
     <item
         android:id="@+id/action_sort"
         android:icon="@drawable/ic_sort"
         android:title="@string/menu_chatroom_sort"
-        app:showAsAction="always" />
+        android:showAsAction="always" />
 
 </menu>

app/src/main/res/menu/image_actions.xml

@@ -6,5 +6,5 @@
         android:id="@+id/action_save_image"
         android:icon="@drawable/ic_file_download_white_24dp"
         android:title="@string/action_save_to_gallery"
-        app:showAsAction="always" />
+        android:showAsAction="always" />
 </menu>
\ No newline at end of file

emoji/src/main/res/layout/emoji_category_layout.xml

 <?xml version="1.0" encoding="utf-8"?>
 <androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="wrap_content">
 
@@ -9,11 +8,7 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:layout_marginEnd="8dp"
-        android:layout_marginStart="8dp"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        android:layout_marginStart="8dp" />
 
     <TextView
         android:id="@+id/text_no_recent_emoji"

emoji/src/main/res/values/colors.xml

+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorWhite">#FFFFFFFF</color>
+
+    <color name="darkGray">#FFa0a0a0</color>
+    <color name="whitesmoke">#FFf1f1f1</color>
+
+    <color name="colorEmojiIcon">#FF767676</color>
+    <color name="colorDividerMessageComposer">#D8D8D8</color>
+</resources>