Expected behavior Navbar should work with SSR

Actual behavior Using Navbar with SSR causing 'window is not defined' error.

Resources (screenshots, code snippets etc.)

Example component:

<template>
    <mdb-navbar position="top" light>
        <mdb-navbar-nav>
            <span>DEMO</span>
        </mdb-navbar-nav>
    </mdb-navbar>
</template>

<script>
    import {mdbNavbarNav, mdbNavbar} from 'mdbvue'

    export default {
        components: {mdbNavbarNav, mdbNavbar}
    };
</script>

This simple component should work with SSR but it causes a 'window is not defined' error on the server side.

I came up with two solutions the first and not prefered one is to simply disable ssr for the component by wrapping <mdb-navbar> in <no-ssr> tag.

The second and prefered solution involves a change of the mdb-navbar component. Simply moving the content from the created() livecycle event to the mounted() livecycle event fixes the problem.