Update contact page

[rafaelcaue]

I have updated the contact page with the new website for Michael, and changed lab to group.
I tried commenting the address but it didn't work, so I just removed it and pasted it here, so we can add it back later when we have the new address.

<br>

<section class="columns large-4">
<div markdown="1">
## Address
**Autonomy and Verification Laboratory**  
University of Liverpool  
Department of Computer Science  
Ashton Building, Room 1.17  
Ashton Street  
Liverpool  
L69 3BX  
United Kingdom  
Phone: +44 0151 795 4237  
</div>
</section>

<section class="columns large-8">
<div markdown="1">
<section id="map" class="map">
  <iframe id="map_iframe"
    width="100%"
    height="100%"
    frameborder="0"
    scrolling="no"
    marginheight="0"
    marginwidth="0"
    src="https://maps.google.com/maps/embed/v1/place?key={{ site.google_api_key }}&q={% for address in site.address %}{{ address.line }},{% endfor %}"
    allowfullscreen>
  </iframe>
  <br>
  <small id="map_iframe"
    width="100%"
    height="100%"
    frameborder="0"
    scrolling="no"
    marginheight="0"
    marginwidth="0"
    src="https://maps.google.com/maps/embed/v1/place?key={{ site.google_api_key }}&q={% for address in site.address %}{{ address.line }},{% endfor %}"
    allowfullscreen>
  </small>
</section>
</div>
</section>

[rafaelcaue]

Removed picture from home page.

<br/>
<p style="text-align: center;">
<img src="{{site.url}}/images/ashton-home.png" alt="Picture of the Ashton Building, University of Liverpool, UK" title="Picture of the Ashton Building, University of Liverpool, UK"/>
</p>