Fix table rendering in polls description

www/poll/app-poll.less

@@ -1,6 +1,7 @@
 @import (reference) '../../customize/src/less2/include/tools.less';
 @import (reference) '../../customize/src/less2/include/avatar.less';
 @import (reference) "../../customize/src/less2/include/framework.less";
+@import (reference) "../../customize/src/less2/include/markdown.less";
 
 &.cp-app-poll {
 
@@ -212,10 +213,10 @@
 
     // from cryptpad.less
 
+    #cp-app-poll-table-container {
         table {
             border-collapse: collapse;
             border-spacing: 0;
-        margin: 20px;
         }
         tbody {
             * {
@@ -236,6 +237,7 @@
                 }
             }
         }
+    }
 
     div.cp-app-poll-realtime {
         display: block;
@@ -256,6 +258,7 @@
         padding: 0px;
         margin: 0px;
 
+        #cp-app-poll-table-container {
             .cp-app-poll-table-scrolled {
                 tr td:last-child {
                     right: 0;
@@ -555,6 +558,7 @@
                     display: none;
                 }
             }
+        }
         #cp-app-poll-nocomments {
             color: #999;
             text-align: center;

www/slide/app-slide.less

@@ -351,7 +351,9 @@
                 margin-bottom: 0.5em;
             }
 
+            .markdown_main();
             .markdown_preformatted-code;
+            .markdown_gfm-table(#ddd);
 
             ul, ol {
                 min-width: 50%;