[IMP] web: tables :hover state

Properly style table’s rows ‘:hover’ state to let people understand
that it’s clickable

addons/web/static/src/js/views/list/list_renderer.js

@@ -637,7 +637,7 @@ var ListRenderer = BasicRenderer.extend({
             return this._super();
         }
 
-        var $table = $('<table>').addClass('o_list_view table table-condensed table-striped');
+        var $table = $('<table>').addClass('o_list_view table table-condensed table-hover table-striped');
         this.$el
             .addClass('table-responsive')
             .append($table);

addons/web/static/src/less/bootstrap_overridden.less

@@ -106,6 +106,7 @@
 
 //== Tables
 @table-bg-accent: #efeff8; // FIXME: expose
+@table-bg-hover: darken(@table-bg-accent,5%);
 
 // ------------------------------------------------------------------
 // Bootstrap components rules (non exposed features variables)