conversations-classic/src/main/res/layout/activity_about.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="?attr/color_background_secondary"
    tools:context="eu.siacs.conversations.ui.AboutActivity"
    android:orientation="vertical">

    <include layout="@layout/toolbar" />

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <android.support.v7.widget.CardView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="@dimen/activity_vertical_margin"
            android:layout_marginLeft="@dimen/activity_horizontal_margin"
            android:layout_marginRight="@dimen/activity_horizontal_margin"
            android:layout_marginTop="@dimen/activity_vertical_margin">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:autoLink="web"
                android:fontFamily="monospace"
                android:linksClickable="true"
                android:padding="@dimen/card_padding_regular"
                android:text="@string/pref_about_message"
                android:textAppearance="@style/TextAppearance.AppCompat.Body1"
                android:typeface="monospace"/>
        </android.support.v7.widget.CardView>
    </ScrollView>
</LinearLayout>