* Update since tags and fix code formatting (#11441)

server/src/main/java/com/vaadin/ui/Grid.java

          * @param <P>
          *            the presentation type
          *
-         * @since
+         * @since 8.7.0
          */
         protected <P> Column(ValueProvider<T, V> valueProvider,
                 ValueProvider<V, P> presentationProvider,
      * @param <P>
      *            the column presentation type
      *
-     * @since
+     * @since 8.7.0
      */
     private <V, P> Column<T, V> createColumn(ValueProvider<T, V> valueProvider,
             ValueProvider<V, P> presentationProvider,

uitest/src/test/java/com/vaadin/tests/components/datefield/DateFieldUnparsableDateStringTest.java

                 .findElement(By.className("v-textfield"));
         dateTextbox.sendKeys("0304", Keys.ENTER);
         findElement(By.tagName("body")).click();
-        assertEquals("03.04."+ LocalDate.now().getYear(), dateTextbox.getAttribute("value"));
+        assertEquals("03.04." + LocalDate.now().getYear(),
+                dateTextbox.getAttribute("value"));
 
         dateTextbox.clear();
         dateTextbox.sendKeys("0304", Keys.ENTER);
         findElement(By.tagName("body")).click();
-        assertEquals("03.04."+ LocalDate.now().getYear(), dateTextbox.getAttribute("value"));
+        assertEquals("03.04." + LocalDate.now().getYear(),
+                dateTextbox.getAttribute("value"));
     }
 
     @Override