Invitation : start polishing but theme has to be rework. Waiting for Nad inputs.

vector/src/main/res/drawable/bg_button_secondary.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright 2019 New Vector Ltd
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~ http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape android:shape="rectangle">
+            <solid android:color="@android:color/transparent"/>
+            <stroke android:width="1dp" android:color="?attr/colorAccent" />
+        </shape>
+    </item>
+</selector>