configure am/pm time-format as user preference (#2789)

.env.dist

@@ -1,30 +1,16 @@
-### DATABASE CONFIGURATION
-#   Replace "user", "password" and "database" with your database connection.
-#   Configure the server version, MariaDB requires the "mariadb-" prefix, eg:
-#     for MySQL "serverVersion=5.7" and for MariaDB "serverVersion=mariadb-10.5.8"
+# Configure your database connection and set the correct server version:
+# for MySQL "serverVersion=5.7" and for MariaDB "serverVersion=mariadb-10.5.8"
 DATABASE_URL=mysql://user:password@127.0.0.1:3306/database?charset=utf8&serverVersion=5.7
-
-### EMAIL CONFIGURATION
-#   Emails will be sent "from":
+# Email will be sent with this address as sender
 MAILER_FROM=kimai@example.com
-
-# Email connection (disabled by default with MAILER_URL=null://null)
-#   SMTP: smtp://localhost:25?encryption=&auth_mode=
-#   Google: gmail://username:password@default
-#   Amazon: ses://ACCESS_KEY:SECRET_KEY@default?region=eu-west-1
-#   Mailchimp: mandrill://KEY@default
-#   Mailgun: mailgun://KEY:DOMAIN@default
-#   Postmark: postmark://ID@default
-#   Sendgrid: sendgrid://KEY@default
-#   Disable emails: null://null
+# Email connection (disabled by default) more info at https://www.kimai.org/documentation/emails.html
 MAILER_URL=null://null
-
-### APPLICATION CONFIGURATION
+# do not change, unless you are developing for Kimai
 APP_ENV=prod
+# should be changed to a unique character sequence
 APP_SECRET=change_this_to_something_unique
-
-#   Running in a "special" environment, eg. behind reverse proxies?
-#   Check those:
-#     TRUSTED_PROXIES=127.0.0.1,127.0.0.2
-#     TRUSTED_HOSTS=localhost,example.com
+# unlikely, that you need to change this one
 CORS_ALLOW_ORIGIN=^https?://localhost(:[0-9]+)?$
+# Running behind reverse proxies? Use those:
+# TRUSTED_PROXIES=127.0.0.1,127.0.0.2
+# TRUSTED_HOSTS=localhost,example.com