Can show group logo as group conversations logo

lib/ui/tiles/conversation_tile.dart

@@ -80,7 +80,12 @@ class ConversationTile extends StatelessWidget {
 
         // Leading icon
         leading: ConversationImageWidget(
-            conversation: conversation, users: usersList),
+          conversation: conversation,
+          users: usersList,
+          group: conversation.isGroupConversation
+              ? groupsList.getGroup(conversation.groupID)
+              : null,
+        ),
 
         // Conversation information
         isThreeLine: true,

lib/ui/widgets/conversation_image_widget.dart

@@ -1,6 +1,7 @@
 import 'package:cached_network_image/cached_network_image.dart';
 import 'package:comunic/lists/users_list.dart';
 import 'package:comunic/models/conversation.dart';
+import 'package:comunic/models/group.dart';
 import 'package:comunic/models/user.dart';
 import 'package:comunic/ui/widgets/account_image_widget.dart';
 import 'package:flutter/material.dart';
@@ -13,13 +14,15 @@ class ConversationImageWidget extends StatelessWidget {
   final Conversation conversation;
   final UsersList users;
   final double size;
+  final Group group;
 
-  const ConversationImageWidget(
-      {Key key,
+  const ConversationImageWidget({
+    Key key,
     @required this.conversation,
     @required this.users,
-      this.size = 30})
-      : assert(conversation != null),
+    this.group,
+    this.size = 30,
+  })  : assert(conversation != null),
         assert(users != null),
         assert(size > 0),
         super(key: key);
@@ -40,6 +43,13 @@ class ConversationImageWidget extends StatelessWidget {
         width: size,
       );
 
+    if (group != null) {
+      return CachedNetworkImage(
+        imageUrl: group.iconURL,
+        width: size,
+      );
+    }
+
     if (conversation.members.length < 2)
       return Icon(
         Icons.lock,