timezon and param_sep blueprints

system/blueprints/config/system.yaml

@@ -362,3 +362,26 @@ form:
                         0: No
                     validate:
                         type: bool
+        system:
+            type: section
+            title: System
+            underline: true
+
+            fields:
+                timezone:
+                    type: select
+                    label: Timezone
+                    classes: fancy
+                    @data-options: '\Grav\Common\Utils::timezones'
+                    default: ''
+                    options:
+                        '': '- None -'
+
+                param_sep:
+                    type: select
+                    label: Parameter separator
+                    classes: fancy
+                    default: ''
+                    options:
+                        ':': ': (default)'
+                        ';': '; (use this for apache on Windows)'

system/src/Grav/Common/Utils.php

@@ -348,4 +348,32 @@ abstract class Utils
         }
         return $root . implode('/', $ret);
     }
+
+    public static function timezones()
+    {
+        $timezones = \DateTimeZone::listIdentifiers(\DateTimeZone::ALL);
+        $offsets = [];
+        $testDate = new \DateTime;
+
+        foreach ($timezones as $zone) {
+            $tz = new \DateTimeZone($zone);
+            $offsets[$zone] = $tz->getOffset($testDate);
+        }
+
+        asort($offsets);
+
+        $timezone_list = array();
+        foreach( $offsets as $timezone => $offset )
+        {
+            $offset_prefix = $offset < 0 ? '-' : '+';
+            $offset_formatted = gmdate( 'H:i', abs($offset) );
+
+            $pretty_offset = "UTC${offset_prefix}${offset_formatted}";
+
+            $timezone_list[$timezone] = "(${pretty_offset}) $timezone";
+        }
+
+        return $timezone_list;
+
+    }
 }