Improved Locales (#5497)

- Switch Chinese time format to 24-hours - fixes #5496
- Use always 4 chars for year
- Use one `HH` instead of `H`, so we don't have to convert during runtime
- Update all locales
- Allow seeing time and date format in help UI
- Fix RTL in UI
- Show stats about found formats in Locales command

tests/DependencyInjection/AppExtensionTest.php

@@ -68,20 +68,20 @@ class AppExtensionTest extends TestCase
             'kimai.data_dir' => '/tmp/',
             'kimai.languages' => [
                 'en' => [
-                    'date' => 'M/d/yy',
+                    'date' => 'M/d/y',
                     'time' => 'h:mm a',
                     'rtl' => false,
                     'translation' => true,
                 ],
                 'de' => [
-                    'date' => 'dd.MM.yy',
+                    'date' => 'dd.MM.y',
                     'time' => 'HH:mm',
                     'rtl' => false,
                     'translation' => true,
                 ],
                 'he' => [
                     'date' => 'd.M.y',
-                    'time' => 'H:mm',
+                    'time' => 'HH:mm',
                     'rtl' => true,
                     'translation' => true,
                 ],