2016/program/index.html: HTML5 validation fixes.

diff --git a/2016/program/index.html b/2016/program/index.html
index 8490fdb6dda40bc2b4af34d422cede81baf20f65..64ee1afb71501f77009addffe2c9a19e1f788239 100755 (executable)
--- a/2016/program/index.html
+++ b/2016/program/index.html
@@ -56,7 +56,7 @@
               </header>
               <a href="#" class="program-session-speaker">Richard Stallman</a>
 
-              <button class="btn btn-default btn-xs" role="button"
+              <button class="btn btn-default btn-xs"
                       data-toggle="collapse" aria-expanded="false"
                       aria-controls="sat-ts0-s0-collapse"
                       data-target="#sat-ts0-s0-collapse">
@@ -94,7 +94,7 @@
               <span class="program-session-speaker">
                 <a href="#">Christopher Webber</a>
               </span>
-              <button class="btn btn-default btn-xs" role="button"
+              <button class="btn btn-default btn-xs"
                       data-toggle="collapse" aria-expanded="false"
                       aria-controls="sat-ts1-s0-collapse"
                       data-target="#sat-ts1-s0-collapse">
@@ -122,7 +122,7 @@
                   ginger coons
                 </a>
               </span>
-              <button class="btn btn-default btn-xs" role="button"
+              <button class="btn btn-default btn-xs"
                       data-toggle="collapse" aria-expanded="false"
                       aria-controls="sat-ts1-s1-collapse"
                       data-target="#sat-ts1-s1-collapse">
@@ -153,7 +153,7 @@
                 <a href="#">
                   Jonathan Le Lous</a>
               </span>
-              <button class="btn btn-default btn-xs" role="button"
+              <button class="btn btn-default btn-xs"
                       data-toggle="collapse" aria-expanded="false"
                       aria-controls="sat-ts1-s2-collapse"
                       data-target="#sat-ts1-s2-collapse">
@@ -209,7 +209,7 @@
               <span class="program-session-speaker">
                 <a href="#">Seth Schoen</a>
               </span>
-              <button class="btn btn-default btn-xs" role="button"
+              <button class="btn btn-default btn-xs"
                       data-toggle="collapse" aria-expanded="false"
                       aria-controls="sat-ts2-s0-collapse"
                       data-target="#sat-ts2-s0-collapse">
@@ -236,7 +236,7 @@
               </header>
               <span class="program-session-speaker"><a href="#">Jonas Öberg</a></span>
 
-              <button class="btn btn-default btn-xs" role="button"
+              <button class="btn btn-default btn-xs"
                       data-toggle="collapse" aria-expanded="false"
                       aria-controls="sat-ts2-s1-collapse"
                       data-target="#sat-ts2-s1-collapse">
@@ -320,7 +320,7 @@
               </header>
               <a href="#" class="program-session-speaker">
                 Benjamin Mako Hill</a>
-              <button class="btn btn-default btn-xs" role="button"
+              <button class="btn btn-default btn-xs"
                       data-toggle="collapse" aria-expanded="false"
                       aria-controls="sun-ts0-s0-collapse"
                       data-target="#sun-ts0-s0-collapse">
@@ -378,7 +378,7 @@
               <span class="program-session-speaker">
                 <a href="#">Bradley Kuhn</a>
               </span>
-              <button class="btn btn-default btn-xs" role="button"
+              <button class="btn btn-default btn-xs"
                       data-toggle="collapse" aria-expanded="false"
                       aria-controls="sun-ts1-s0-collapse"
                       data-target="#sun-ts1-s0-collapse">
@@ -418,7 +418,7 @@
               <span class="program-session-speaker">
                 <a href="#">Ken Starks</a>
               </span>
-              <button class="btn btn-default btn-xs" role="button"
+              <button class="btn btn-default btn-xs"
                       data-toggle="collapse" aria-expanded="false"
                       aria-controls="sun-ts1-s1-collapse"
                       data-target="#sun-ts1-s1-collapse">