Update and rename class.

app/src/main/java/chat/rocket/android/helper/Avatar.kt

-package chat.rocket.android.helper
-
-import chat.rocket.android.widget.AbsoluteUrl
-import chat.rocket.android.widget.RocketChatAvatar
-import java.net.URLEncoder
-
-class Avatar(val absoluteUrl: AbsoluteUrl?, val username: String) {
-
-    val imageUrl: String
-        /** REMARK
-         * This is often a SVG image (see Rocket.Chat:server/startup/avatar.js)
-         */
-        get() {
-            val avatarUrl = "/avatar/" + URLEncoder.encode(username, "UTF-8")
-            if (absoluteUrl == null) {
-                return avatarUrl
-            }
-            return absoluteUrl.from("/avatar/" + URLEncoder.encode(username, "UTF-8"))
-        }
-
-    /**
-     * render avatar into RocketChatAvatar.
-     */
-    fun into(rocketChatAvatar: RocketChatAvatar) {
-        rocketChatAvatar.loadImage(imageUrl)
-    }
-}
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app/src/main/java/chat/rocket/android/helper/RocketChatUserAvatar.kt

+package chat.rocket.android.helper
+
+import java.net.URLEncoder
+
+class RocketChatUserAvatar(val hostname: String, val username: String) {
+
+    val imageUri: String
+        /** REMARK
+         * This is often a SVG image (see Rocket.Chat:server/startup/avatar.js).
+         */
+        get() {
+            return "https://" +
+                    hostname.replace("http://", "").replace("https://", "") +
+                    "/avatar/" +
+                    URLEncoder.encode(username, "UTF-8")
+        }
+}
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