Added content description for ImageView.

Signed-off-by: Sowjanya Kota<sowjanya.kch@gmail.com>

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

@@ -11,28 +11,29 @@
     android:orientation = "horizontal">
 
     <ImageView
-        android:id = "@+id/editImage"
+        android:id = "@+id/editIcon"
         android:layout_width="48dp"
         android:layout_height="48dp"
         android:padding = "12dp"
         android:src = "@drawable/ic_edit_24"
         android:layout_gravity = "start|top"
+        android:contentDescription= "@string/nc_edit_icon"
         app:tint="@color/grey_600">
 
     </ImageView>
 
     <LinearLayout
-        android:layout_width="match_parent"
+        android:layout_width="0dp"
         android:layout_height="wrap_content"
         android:layout_weight = "1"
         android:orientation = "vertical">
+
         <TextView
             android:id = "@+id/editMessageTitle"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:textColor = "@color/grey_600"
             android:text = "@string/nc_edit_message_text">
-
         </TextView>
 
         <TextView
@@ -52,8 +53,8 @@
         android:layout_height="48dp"
         android:padding = "12dp"
         android:src = "@drawable/ic_clear_24"
+        android:contentDescription="@string/nc_clear_edit_button"
         android:gravity = "top|end">
-
     </ImageView>
 
 </LinearLayout>

app/src/main/res/values/strings.xml

@@ -798,4 +798,6 @@ How to translate with transifex:
     <string name="add_to_notes">Add to Notes</string>
     <string name="nc_edited_by_admin">Edited by admin</string>
     <string name="nc_edited_by">"Edited by "</string>
+    <string name="nc_clear_edit_button">clear Edit Button</string>
+    <string name="nc_edit_icon">Edit Icon</string>
 </resources>