Draft patchset and change visibility in UI

If a patchset is a draft, adds a (DRAFT) label next to the revision
(or gitweb link if it exists). If a change is a draft, adds a (DRAFT)
next to the subject and changes the status appropriately.

Change-Id: Ib84ccc2aff9feebc203424a620e2c4b7975ac000

gerrit-gwtui/src/main/java/com/google/gerrit/client/changes/ChangeConstants.java

@@ -21,6 +21,7 @@ public interface ChangeConstants extends Constants {
   String statusLongSubmitted();
   String statusLongMerged();
   String statusLongAbandoned();
+  String statusLongDraft();
 
   String changesRecentlyClosed();
 
@@ -140,6 +141,8 @@ public interface ChangeConstants extends Constants {
   String pagedChangeListPrev();
   String pagedChangeListNext();
 
+  String draftPatchSetLabel();
+
   String reviewed();
   String submitFailed();
   String buttonClose();

gerrit-gwtui/src/main/java/com/google/gerrit/client/changes/ChangeConstants.properties

@@ -2,6 +2,7 @@ statusLongNew = Review in Progress
 statusLongSubmitted = Submitted, Merge Pending
 statusLongMerged = Merged
 statusLongAbandoned = Abandoned
+statusLongDraft = Draft
 
 starredHeading = Starred Changes
 watchedHeading = Open Changes of Watched Projects
@@ -117,6 +118,8 @@ headingPatchComments = Patch Comments:
 pagedChangeListPrev = ⇦Prev
 pagedChangeListNext = Next⇨
 
+draftPatchSetLabel = (DRAFT)
+
 upToChangeIconLink = ⇧Up to change
 prevPatchLinkIcon = ⇦
 nextPatchLinkIcon = ⇨

gerrit-gwtui/src/main/java/com/google/gerrit/client/changes/PatchSetComplexDisclosurePanel.java

@@ -117,6 +117,12 @@ class PatchSetComplexDisclosurePanel extends ComplexDisclosurePanel implements O
       revlink.addStyleName(Gerrit.RESOURCES.css().patchSetLink());
       getHeader().add(revlink);
     }
+
+    if (ps.isDraft()) {
+      final InlineLabel draftLabel = new InlineLabel(Util.C.draftPatchSetLabel());
+      draftLabel.addStyleName(Gerrit.RESOURCES.css().patchSetRevision());
+      getHeader().add(draftLabel);
+    }
   }
 
   public void setDiffBaseId(PatchSet.Id diffBaseId) {

gerrit-gwtui/src/main/java/com/google/gerrit/client/changes/Util.java

@@ -46,6 +46,8 @@ public class Util {
       return "";
     }
     switch (status) {
+      case DRAFT:
+        return C.statusLongDraft();
       case NEW:
         return C.statusLongNew();
       case SUBMITTED: