removed "Subscription columns" from config and source and replaced by automatic column spread.

doc/config.html

@@ -232,13 +232,6 @@ Welcome title = <img src="welcome.jpg"><p><font size=5 color=whit
       <code><b>elogd</b></code> can be used.
    </li>
    <li>
-      <b><code>Subscription columns = &lt;number&gt;</code></b><br>
-      The config page shows a list of all logbooks one can subscribe to.
-      When the list is very long it might be recommended to organize it in
-      columns. This option allows to specify the numbers of columns to use
-      (default is 1 column: a simple list).
-   </li>
-<li>
       <b><code>Guest Selection page = &lt;file&gt;</code></b><br>
       The same for installations which have a global password file. This
       means that the logbook selection page is also password protected. It

src/elogd.c

@@ -13973,11 +13973,9 @@ void show_config_page(LOGBOOK * lbs)
    }
 
    if (n > 0) {
-      if (getcfg(lbs->name, "Subscription columns", str, sizeof(str)))
-         cols = atoi(str);
-      else
-         cols = 1;
-
+      for (i = 0; lb_list[i].name[0]; i++) {}
+      j = (int) (i / 16) + 1;
+      cols =  ((j>5)?5:j);
       rsprintf("<tr><td width=\"15%%\">%s:\n", loc("Subscribe to logbooks"));
 
       rsprintf("<br><span class=\"selcomment\"><b>(%s)</b></span>\n",