SORMAS-Foundation#3223 - Made event title mandatory

Author: MateStrysewske

sormas-app/app/src/main/res/layout/fragment_event_edit_layout.xml

@@ -140,12 +140,12 @@
             <de.symeda.sormas.app.component.controls.ControlTextEditField
                 android:id="@+id/event_eventTitle"
                 style="@style/ControlSingleColumnStyle"
+                app:required="true"
                 app:value="@={data.eventTitle}" />
 
             <de.symeda.sormas.app.component.controls.ControlTextEditField
                 android:id="@+id/event_eventDesc"
                 style="@style/ControlSingleColumnStyle"
-                app:required="true"
                 app:value="@={data.eventDesc}" />
 
             <de.symeda.sormas.app.component.controls.ControlSwitchField

sormas-backend/src/main/java/de/symeda/sormas/backend/event/Event.java

@@ -187,7 +187,7 @@ public void setEventTitle(String eventTitle) {
 		this.eventTitle = eventTitle;
 	}
 
-	@Column(length = COLUMN_LENGTH_BIG, nullable = false)
+	@Column(length = COLUMN_LENGTH_BIG)
 	public String getEventDesc() {
 		return eventDesc;
 	}

sormas-backend/src/main/resources/sql/sormas_schema.sql

@@ -5533,4 +5533,9 @@ CREATE INDEX IF NOT EXISTS idx_eventparticipant_resultingcase_id ON eventpartici
 
 INSERT INTO schema_version (version_number, comment) VALUES (272, 'Increase case directory performance #3137');
 
+-- 2020-11-02 Drop not null constraint from event description #3223
+ALTER TABLE events ALTER COLUMN eventdesc DROP NOT NULL;
+
+INSERT INTO schema_version (version_number, comment) VALUES (273, 'Drop not null constraint from event description #3223');
+
 -- *** Insert new sql commands BEFORE this line ***

sormas-ui/src/main/java/de/symeda/sormas/ui/events/EventDataForm.java

@@ -221,7 +221,7 @@ protected void addFields() {
 			Collections.singletonList(EventDto.DISEASE_DETAILS),
 			Collections.singletonList(Disease.OTHER));
 
-		setRequired(true, EventDto.EVENT_STATUS, EventDto.UUID, EventDto.EVENT_DESC, EventDto.REPORT_DATE_TIME, EventDto.REPORTING_USER);
+		setRequired(true, EventDto.EVENT_STATUS, EventDto.UUID, EventDto.EVENT_TITLE, EventDto.REPORT_DATE_TIME, EventDto.REPORTING_USER);
 
 		FieldHelper.setVisibleWhen(getFieldGroup(), EventDto.END_DATE, EventDto.MULTI_DAY_EVENT, Collections.singletonList(true), true);
 		FieldHelper.setCaptionWhen(