use chat bubble as fallback

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

drawable_resources/chat_bubble.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24">
+    <path d="M20 2H4c-1.1 0-2 .9-2 2v18l4-4h14c1.1 0 2-.9 2-2V4c0-1.1-.9-2-2-2z"/>
+    <path d="M0 0h24v24H0z" fill="none"/>
+</svg>

src/main/java/com/owncloud/android/providers/UsersAndGroupsSearchProvider.java

@@ -239,7 +239,7 @@ public class UsersAndGroupsSearchProvider extends ContentProvider {
                             break;
 
                         case ROOM:
-                            icon = R.drawable.ic_group;
+                            icon = R.drawable.ic_chat_bubble;
                             displayName = getContext().getString(R.string.share_room_clarification, userName);
                             dataUri = Uri.withAppendedPath(groupBaseUri, shareWith);
                             break;

src/main/java/com/owncloud/android/ui/adapter/ShareUserListAdapter.java

@@ -102,7 +102,7 @@ public class ShareUserListAdapter extends ArrayAdapter {
                     break;
                 case ROOM:
                     name = getContext().getString(R.string.share_room_clarification, name);
-                    setImage(icon, name, R.drawable.ic_group);
+                    setImage(icon, name, R.drawable.ic_chat_bubble);
                     break;
                 default:
                     setImage(icon, name, R.drawable.ic_user);

src/main/java/com/owncloud/android/ui/adapter/UserListAdapter.java

@@ -112,7 +112,7 @@ public class UserListAdapter extends RecyclerView.Adapter<UserListAdapter.UserVi
                     break;
                 case ROOM:
                     name = context.getString(R.string.share_room_clarification, name);
-                    setImage(holder, name, R.drawable.ic_group);
+                    setImage(holder, name, R.drawable.ic_chat_bubble);
                     break;
                 default:
                     setImage(holder, name, R.drawable.ic_user);

src/main/res/drawable/ic_chat_bubble.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24"
+        android:viewportHeight="24">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M20,2H4c-1.1,0 -2,0.9 -2,2v18l4,-4h14c1.1,0 2,-0.9 2,-2V4c0,-1.1 -0.9,-2 -2,-2z"/>
+</vector>