Revised styling for \

Revised styling for speaker cards.  This requires additional classes be added to the HTML to identify speaker_name, speaker_message, and speaker_url text, e.g.:

</div>
	<div class="col-md-4">
	<div class="announcement">
	<a href="http://www.meetup.com/Data-Science-DC/members/482161/">
	<img src="./Ballyhoo  Data Science DC_files/member_57681492.jpeg" class="admin ann_comps">
	<p class="ann_comps speaker_name">Harlan Harris</p>
	</a>
	<p class="ann_comps speaker_message">Sentrana is hiring bunnies</p>
	<a href="http://sentrana.com/">
	<p class="ann_comps speaker_url">http://sentrana.com</p>
	</a>
		</div>