ChangeScreen2: Make Reply button configurable

There were several complaints on Google Groups and in the issue tracker
about the Reply… button in the New Change Screen. People new to
Gerrit/the New Change Screen didn't know where to click in order to
submit a review.

Add a setting in gerrit.config, where the administrator can customize
the label and tooltip of the Reply… button.

Bug: issue 2541
Bug: issue 2974
Change-Id: Ib9e95aa2f03debc88ea091c4d3fb91c83ad9d1ba

gerrit-common/src/main/java/com/google/gerrit/common/data/GerritConfig.java

@@ -57,6 +57,8 @@ public class GerritConfig implements Cloneable {
   protected List<String> archiveFormats;
   protected int largeChangeSize;
   protected boolean newFeatures;
+  protected String replyLabel;
+  protected String replyTitle;
 
   public String getLoginUrl() {
     return loginUrl;
@@ -308,4 +310,20 @@ public class GerritConfig implements Cloneable {
   public void setNewFeatures(boolean n) {
     newFeatures = n;
   }
+
+  public String getReplyTitle() {
+    return replyTitle;
+  }
+
+  public void setReplyTitle(String r) {
+    replyTitle = r;
+  }
+
+  public String getReplyLabel() {
+    return replyLabel;
+  }
+
+  public void setReplyLabel(String r) {
+    replyLabel = r;
+  }
 }