working on message settings:

- created form
- implemented storing of settings
- implemented loading of settings

next: pre-filling from with settings loaded from DB

core/src/main/java/de/srsoftware/umbrella/core/constants/Constants.java

@@ -2,10 +2,10 @@
 package de.srsoftware.umbrella.core.constants;
 
 
-import java.time.format.DateTimeFormatter;
-
 import static java.nio.charset.StandardCharsets.UTF_8;
 
+import java.time.format.DateTimeFormatter;
+
 public class Constants {
 
 	private Constants(){

core/src/main/java/de/srsoftware/umbrella/core/constants/Field.java

@@ -67,8 +67,10 @@ public class Field {
 
 	public static final String HASH = "hash";
 	public static final String HEAD = "head";
+	public static final String HOURS = "hours";
 
 	public static final String ID        = "id";
+	public static final String INSTANTLY = "instantly";
 	public static final String ITEM      = "item";
 	public static final String ITEM_CODE = "item_code";
 
@@ -123,6 +125,7 @@ public class Field {
 	public static final String SENDER      = "sender";
 	public static final String SETTINGS    = "settings";
 	public static final String SHOW_CLOSED = "show_closed";
+	public static final String SILENT      = "silent";
 	public static final String SOURCE      = "source";
 	public static final String START_DATE  = "start_date";
 	public static final String START_TIME  = "start_time";

core/src/main/java/de/srsoftware/umbrella/core/model/Envelope.java

@@ -9,7 +9,6 @@ import static de.srsoftware.umbrella.core.model.Translatable.t;
 import static java.text.MessageFormat.format;
 
 import de.srsoftware.umbrella.core.exceptions.UmbrellaException;
-
 import java.time.LocalDateTime;
 import java.util.HashSet;
 import java.util.List;