upgrade: Make the environment page a bit less rediculously long. I still can't make it fit on one screen.

admin/index.php

@@ -220,7 +220,6 @@
             print_box($releasenoteslink);
 
             require_once($CFG->libdir.'/environmentlib.php');
-            print_heading(get_string('environment', 'admin'));
             if (!check_moodle_environment($release, $environment_results, true, ENV_SELECT_RELEASE)) {
                 print_upgrade_reload('index.php?confirmupgrade=1');
             } else {

theme/standard/styles_layout.css

@@ -1381,6 +1381,9 @@ table.explainpermissions .cell {
 .environmentbox {
   margin-top: 1em;
 }
+.environmenttable .cell {
+  padding: 0.15em 0.5em;
+}
 
 .form-buttons {
   margin: 10px 0 0 13em;