split in env required and dynamic values

.env.example

@@ -17,25 +17,10 @@ DB_PASSWORD = database_password
 ## BSP für sqlite
 DB_HOST = filename.db
 
+## Dev only
 SERVER_PORT = portnumber
 
-JWT_SECRET = ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890 # besitzt default
-JWT_EXPIRATION = [0-9]*(y|d|h|m|s) # default ist 15m
-REFRESH_EXPIRATION = [0-9]*(y|d|h|m|s) # default ist 1d
-PWA_REFRESH_EXPIRATION = [0-9]*(y|d|h|m|s) # default ist 5d
-
-MAIL_USERNAME = mail_username
-MAIL_PASSWORD = mail_password
-MAIL_HOST = mail_hoststring
-MAIL_PORT = mail_portnumber # default ist 587
-MAIL_SECURE = (true|false) # true für port 465, false für anders gewählten port
-
-CLUB_NAME = clubname #default FF Admin
-CLUB_WEBSITE = https://my-club-website-url #optional, muss aber mit http:// oder https:// beginnen
-
-BACKUP_INTERVAL = number of days (min 1) # default 1
-BACKUP_COPIES = number of parallel copies # default 7
-BACKUP_AUTO_RESTORE = (true|false) # default ist true
+APPLICATION_SECRET = mysecret
 
 USE_SECURITY_STRICT_LIMIT = (true|false) # default ist true
 SECURITY_STRICT_LIMIT_WINDOW = [0-9]*(y|d|h|m|s) # default ist 15m