Parsing fails so the starttime is set to 0

Mostly added to show the problem.

Author: vmcj

webapp/tests/Unit/Controller/Jury/ContestControllerTest.php

@@ -291,7 +291,17 @@ class ContestControllerTest extends JuryControllerTestCase
                                                                                                              'name' => 'Timezones',
                                                                                                              'activatetimeString' => '1990-07-17 16:00:00 Africa/Douala',
                                                                                                              'starttimeString' => '1990-07-17 16:00:00 Etc/GMT+2',
-                                                                                                             'freezetimeString' => '1990-07-17 16:00:00 America/Paramaribo']],
+                                                                                                             'freezetimeString' => '1990-07-17 16:00:00 America/Paramaribo'],
+                                                                                                            ['shortname' => 'tzoffset',
+                                                                                                             'name' => 'TimezonesOffset',
+                                                                                                             'activatetimeString' => '1990-07-17 16:00:00+1:00',
+                                                                                                             'starttimeString' => '1990-07-17 16:00:00+1:01',
+                                                                                                             'freezetimeString' => '1990-07-17 16:00:00+1:01']],
+                                                          'Contest ends before it even starts.' => [['shortname' => 'unknown_php_timezone',
+                                                                                                     'name' => 'PHP Others timezone non-IANA',
+                                                                                                     'activatetimeString' => '1990-07-17 16:00:00 NZ-CHAT',
+                                                                                                     'starttimeString' => '1990-07-17 16:00:00 NZ-CHAT',
+                                                                                                     'freezetimeString' => '1990-07-17 16:00:00 NZ-CHAT']],
                                                           'This value should not be blank.' => [['shortname' => '', 'name' => 'Empty'],
                                                                                                 ['name' => '', 'shortname' => 'empty_name'],
                                                                                                 ['problems' => ['0' => ['problem' => '2',