Add the BSD Day 2019 in Argentina.

While here, fix a trailing whitespace and use two spaces after a sentence stop
in the other entries in this file.

Obtained from:	bsdday.com.ar website (via twitter)

share/xml/events2019.xml

@@ -39,12 +39,12 @@
       European Meeting (FOSDEM) is a free event for software hackers
       to meet, share ideas and collaborate.  Every year 8000+ open
       source developers from all over the world gather at the event in
-      Brussels, Belgium. During the FOSDEM, developer rooms (devrooms)
-      are assigned to self organized open source groups and projects
-      to meet together and showcase their projects; a <a
+      Brussels, Belgium.  During the FOSDEM, developer rooms
+      (devrooms) are assigned to self organized open source groups and
+      projects to meet together and showcase their projects; a <a
 	href="https://fosdem.org/2019/schedule/track/bsd/">BSD
 	devroom</a> will host talks about BSD operating systems and
-      projects. If you want to submit a talk, see <a
+      projects.  If you want to submit a talk, see <a
 	href="http://blog.osorio.me/post.php?idpost=1">the
 	CfP</a>.</description>
   </event>
@@ -93,8 +93,8 @@
     <location>
       <country code="GB">United Kingdom</country>
       <city>Aberdeen</city>
-      <site>University of Aberdeen, Fraser Noble Building, 
-        Room 213</site>
+      <site>University of Aberdeen, Fraser Noble Building,
+	Room 213</site>
     </location>
 
     <description>The Aberdeen hackathon is placed at the half way
@@ -125,4 +125,32 @@
       BSDCan hosts talks and tutorials on a range of topics based
       around the BSD family of operating systems.</description>
   </event>
+
+  <event id="bsdday-2019">
+    <name>BSDday Argentina 2019</name>
+    <url>http://bsdday.com.ar/</url>
+    <startdate>
+      <year>2019</year>
+      <month>05</month>
+      <day>29</day>
+    </startdate>
+    <enddate>
+      <year>2019</year>
+      <month>05</month>
+      <day>30</day>
+    </enddate>
+    <location>
+      <country code="AR">Argentina</country>
+      <city>Buenos Aires</city>
+      <site>Departamento de Computacion de la Facultad de Ciencias
+	Exactas y Naturales de la Universidad de Buenos Aires</site>
+    </location>
+    <description>The BSDday is an event where users, administrators
+      and developers of operating systems of type BSD come together to
+      share knowledge, talks, contacts and get to know each other.  In
+      the event lectures, debates, courses and installations of the
+      systems will be exposed.  The event is also a great entry for
+      Linux users, Unix and other operating systems to the BSD
+      world.</description>
+    </event>
 </events>