Remove useless applicationName

    <uses-permission android:name="org.dmfs.permission.READ_TASKS" />

    <uses-permission android:name="org.dmfs.permission.WRITE_TASKS" />

    <application android:label="@string/app_name"/>

    <application />

</manifest>

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<resources>

    <string name="app_name">iCal4Android</string>

</resources>