Bumped manifest to 3.703

<?xml version="1.0" encoding="utf-8"?>

<manifest

    xmlns:android="http://schemas.android.com/apk/res/android"

    android:versionCode="13002"

    android:versionName="3.702" package="com.fsck.k9"

    android:versionCode="13003"

    android:versionName="3.703" package="com.fsck.k9"

    >

    <uses-sdk

       android:minSdkVersion="3"