Add @since for 7.5.7 changes

Change-Id: I253c6074167bae60149a5f2f0d22c6de160978d4

server/src/com/vaadin/server/Constants.java

@@ -16,6 +16,7 @@
 package com.vaadin.server;
 
 import com.vaadin.shared.communication.PushMode;
+import com.vaadin.ui.declarative.DesignContext;
 
 /**
  * TODO Document me!
@@ -138,6 +139,14 @@ public interface Constants {
     static final String SERVLET_PARAMETER_SYNC_ID_CHECK = "syncIdCheck";
     static final String SERVLET_PARAMETER_SENDURLSASPARAMETERS = "sendUrlsAsParameters";
     static final String SERVLET_PARAMETER_PUSH_SUSPEND_TIMEOUT_LONGPOLLING = "pushLongPollingSuspendTimeout";
+    /**
+     * Name of system or context property to write declarative syntax with the
+     * old "v-" prefix or with the new "vaadin-" prefix. The default value
+     * depends on the Vaadin branch used.
+     * 
+     * @see DesignContext
+     * @since 7.5.7
+     */
     static final String SERVLET_PARAMETER_LEGACY_DESIGN_PREFIX = "legacyDesignPrefix";
 
     // Configurable parameter names

server/src/com/vaadin/ui/GridLayout.java

@@ -1603,7 +1603,6 @@ public class GridLayout extends AbstractLayout implements
      * info about number of columns and rows if there are absolutely no
      * components in the {@link GridLayout}
      * 
-     * @since
      * @param design
      * @param designContext
      */

server/src/com/vaadin/ui/declarative/DesignContext.java

@@ -437,7 +437,7 @@ public class DesignContext implements Serializable {
      * {@link Constants#SERVLET_PARAMETER_LEGACY_DESIGN_PREFIX} can be used to
      * switch to the legacy prefix.
      * 
-     * @since
+     * @since 7.5.7
      * @return true to use the legacy prefix, false by default
      */
     protected boolean isLegacyPrefixEnabled() {

server/src/com/vaadin/ui/declarative/DesignFormatter.java

@@ -378,7 +378,7 @@ public class DesignFormatter implements Serializable {
      * option items in {@link AbstractSelect}) when dumping to HTML format
      * </p>
      * 
-     * @since
+     * @since 7.5.7
      * @param input
      *            String to be encoded
      * @return String with &amp;,&lt; and &gt; replaced with their HTML entities
@@ -403,7 +403,7 @@ public class DesignFormatter implements Serializable {
      * unencodes more characters than {@link #encodeForTextNode(String)} encodes
      * </p>
      * 
-     * @since
+     * @since 7.5.7
      * @param input
      * @return
      */