Hide footer to be screenshot compatible (#10478, #10080)

Change-Id: I5c18ec975c99bda4b44492252eefe34c307b34da

uitest/src/com/vaadin/tests/components/customfield/AbstractNestedFormExample.java

@@ -60,6 +60,7 @@ public abstract class AbstractNestedFormExample extends TestBase {
                 if (event.getProperty().getValue() != null) {
                     personForm = new NestedPersonForm((Person) event
                             .getProperty().getValue(), embeddedAddress);
+                    personForm.setFooter(null);
                     personForm.setWidth("350px");
                     addComponent(personForm);
                 }

uitest/src/com/vaadin/tests/components/customfield/BooleanFieldExample.java

@@ -45,6 +45,7 @@ public class BooleanFieldExample extends TestBase {
         layout.setMargin(true);
 
         final Form form = new Form();
+        form.setFooter(null);
         form.setFormFieldFactory(new DefaultFieldFactory() {
             @Override
             public Field createField(Item item, Object propertyId,

uitest/src/com/vaadin/tests/components/datefield/DateFieldInSubWindow.java

@@ -88,6 +88,7 @@ public class DateFieldInSubWindow extends AbstractTestCase {
             CustomerFieldFactory fieldFactory = new CustomerFieldFactory();
             final Form generalForm = new Form();
             {
+                generalForm.setFooter(null);
                 generalForm.setCaption("My form");
                 generalForm.setBuffered(false);
                 generalForm.setFormFieldFactory(fieldFactory);

uitest/src/com/vaadin/tests/components/form/FormClearDatasourceRepaint.java

@@ -38,6 +38,7 @@ public class FormClearDatasourceRepaint extends TestBase {
     protected void setup() {
 
         final Form form = new Form();
+        form.setFooter(null);
         form.setItemDataSource(new BeanItem<MySecondBean>(new MySecondBean()));
         addComponent(form);
 

uitest/src/com/vaadin/tests/components/form/FormCommitWithInvalidValues.java

@@ -26,6 +26,7 @@ public class FormCommitWithInvalidValues extends TestBase {
     @Override
     protected void setup() {
         form = new Form();
+        form.setFooter(null);
         TextField tf = new TextField("A field, must contain 1-2 chars");
         tf.addValidator(new StringLengthValidator("Invalid length", 1, 2, false));
         tf.setRequired(true);

uitest/src/com/vaadin/tests/components/window/UndefinedHeightSubWindowAndContent.java

@@ -20,6 +20,7 @@ public class UndefinedHeightSubWindowAndContent extends TestBase {
         subWindow.setContent(layout);
 
         final Form form = new Form();
+        form.setFooter(null);
         form.setImmediate(true);
         form.setValidationVisible(true);
         form.setCaption("This is a form");

uitest/src/com/vaadin/tests/validation/EmptyFieldErrorIndicators.java

@@ -55,6 +55,7 @@ public class EmptyFieldErrorIndicators extends TestBase {
         part.setMargin(true);
 
         final Form form = createForm(required, failValidator);
+        form.setFooter(null);
         part.addComponent(form);
 
         Button validate = new Button("Validate fields");