GEODE-1151 Add new committer to list on web page

Adds Dave Barnes and Nitin Lamba to the list of
committers that resides on the Community page of the web site.
To make the web page pretty, it also does a minor alteration to
rebalance the number of names per column.

This closes apache#120

geode-site/website/content/community/index.html

@@ -190,11 +190,12 @@ <h2 class="icns-group" id="committers"><span>Committers</span></h2>
         <li>Christian Tzolov</li>
         <li>Dan Smith</li>
         <li>Darrel Schneider</li>
+        <li>Dave Barnes</li>
         <li>Dave Muirhead</li>
         <li>David Yozie</li>
-        <li>Dick Cavender</li>
 			</div>
 			<div class="col-md-2">
+        <li>Dick Cavender</li>
         <li>Edin Zulich</li>
         <li>Eric Shu</li>
         <li>Gideon Low</li>
@@ -216,9 +217,9 @@ <h2 class="icns-group" id="committers"><span>Committers</span></h2>
         <li>Kishor Bachhav</li>
         <li>Konstantin Boudnik</li>
         <li>Konstantin Ignatyev</li>
-        <li>Lise Storc</li>
 			</div>
 			<div class="col-md-2">
+        <li>Lise Storc</li>
         <li>Luke Shannon</li>
         <li>Lyndon Adams</li>
         <li>Lynn Gallinat</li>
@@ -228,6 +229,7 @@ <h2 class="icns-group" id="committers"><span>Committers</span></h2>
         <li>Namrata Thanvi</li>
         <li>Neeraj Kumar</li>
         <li>Nilkanth Patel</li>
+        <li>Nitin Lamba</li>
         <li>Qihong Chen</li>
         <li>Rahul Diyewar</li>
         <li>Randy May</li>
@@ -239,9 +241,9 @@ <h2 class="icns-group" id="committers"><span>Committers</span></h2>
         <li>Sonal Agarwal</li>
         <li>Soubhik Chakraborty</li>
         <li>Sourabh Bansod</li>
-        <li>Stephane Maldini</li>
 			</div>
 			<div class="col-md-2">
+        <li>Stephane Maldini</li>
         <li>Stuart Williams</li>
         <li>Sudhir Menon</li>
         <li>Sunil Jigyasu</li>