add table descriptions

Author: vladak

opengrok-web/src/main/webapp/diff.jsp

@@ -106,7 +106,7 @@ include file="mast.jsp"
             + Util.htmlize(cfg.getPath());
 %>
 <div id="difftable">
-    <table class="image">
+    <table class="image" aria-label="table with old and new image">
         <thead>
         <tr><th><%= data.getFilename() %> (revision <%= data.getRev(0) %>)</th>
             <th><%= data.getFilename() %> (revision <%= data.getRev(1) %>)</th>
@@ -210,7 +210,7 @@ action=download">download diff</a></span><%
 <div id="difftable">
     <div class="pre"><%
         if (type == DiffType.SIDEBYSIDE || type == DiffType.UNIFIED) {
-        %><table class="plain"><%
+        %><table class="plain" aria-label="table with old and new content"><%
             if (type == DiffType.SIDEBYSIDE) {
             %>
             <thead><tr>

opengrok-web/src/main/webapp/history.jsp

@@ -212,7 +212,7 @@ document.domReady.push(function() {domReadyHistory();});
 </style>
 <![endif]-->
 <form action="<%= context + Prefix.DIFF_P + uriEncodedName %>">
-<table class="src" id="revisions">
+<table class="src" id="revisions" aria-label="table of revisions">
     <thead>
         <tr>
             <th>Revision <%

opengrok-web/src/main/webapp/menu.jspf

@@ -59,7 +59,7 @@ document.domReady.push(function() { domReadyMenu(); });
 </script>
 <form action="<%= request.getContextPath() %>/search" id="sbox" onsubmit="searchSubmit(this)">
 <div id="qtbl">
-    <table>
+    <table aria-label="query table">
     <%
     if (projects.size() != 0) {
     %>

opengrok-web/src/main/webapp/search.jsp

@@ -226,7 +226,7 @@ include file="menu.jspf"
         <p class="slider"><%= slider %></p><%
         }
         %>
-        <table><%
+        <table aria-label="table of results"><%
         Results.prettyPrint(out, searchHelper, start, start + thispage);
         %>
         </table>