Final changes to Angular Images before making default

This addresses the suggestions found by Rob and Travis:

- The Admin panel doesn't show *all* images, just those either in the current
  project or exposed as public (same as Project). (Travis)

  FIX: The Admin panel now supplies is_public: None as the Python code does,
  which allows all images to be shown.

- The 'Is Public' attribute is in the drawer now (even on large screen sizes)
and we can't sort by shared, public etc, as far as I can tell. I don't think
we specifically need the buttons like the previous design had, but it feels
like a regression to have no filtering or sorting on that field? Perhaps
someone with better glance knowledge could correct me.

  FIX: Added 'visibility' as a synthesized field and added as a facet, making
  sure to use the current project to correctly identify 'Shared with Project'.
  Did *not* add 'Is Public' as that is a vestigial concept.

- Create/Edit Image > Image Details tab needs help text. Create has some info,
but Edit has nothing really. Also, we can drop that "description" header in
the help text; it doesnt add any value. This would be a nice improvement over
the Python version for novice users, and shouldnt take long to enter - just
pull info from the API docs.

  NO CHANGE: Let's not block enablement on verbiage. I think we need a better
  consistency and I don't believe the last-minute is the best time to add this
  because it's very easy to create/find nits.

- Create Volume help text is also entirely blank. We should fill that out
with some useful instructions, IMO.

  FIX: Added basic help text.

- Create Volume should default to the first Availability Zone if there is
only one, as it is a required field anyway.

  FIX: I added logic for this, and also added in some test features so we don't
  lose coverage.

- The Image Details page now longer lists the owner ID. I don't think this
is addressed by Travis' patch either.

  FIX: This is now under the 'Security' heading.

- Kernel ID and Ramdisk ID seem empty in angular image details, but populated
in the python equivalent.

  FIX: This was a regression that this patch fixes.

- Why are created/updated/ID separated into "Record Properties"? Is there
something in the API about this, or is it just a presentation construct?

  CHANGE: Moved into the general 'Image' header.  Added a filter so that these
  can be implemented as basic property registrations.

- I think 'Filename' in angular image details can be hidden if empty.

  CHANGE: Instead of hiding, we can show the standard '-' if no filename.

Change-Id: I4b770f9e61f9a8b1bd735d95c2ccc75bc21dd944
Partially-Implements: blueprint angularize-images-table

horizon/static/framework/util/filters/filters.js

@@ -19,6 +19,7 @@
   angular
     .module('horizon.framework.util.filters')
     .filter('yesno', yesNoFilter)
+    .filter('simpleDate', simpleDateFilter)
     .filter('gb', gbFilter)
     .filter('mb', mbFilter)
     .filter('title', titleFilter)
@@ -45,6 +46,19 @@
     };
   }
 
+  /**
+   * @ngdoc filter
+   * @name simpleDate
+   * @description
+   * Evaluates given for display as a short date, returning '-' if empty.
+   */
+  simpleDateFilter.$inject = ['$filter'];
+  function simpleDateFilter($filter) {
+    return function (input) {
+      return $filter('noValue')($filter('date')(input, 'short'));
+    };
+  }
+
   /**
    * @ngdoc filter
    * @name gb

horizon/static/framework/util/filters/filters.spec.js

@@ -38,6 +38,21 @@
       });
     });
 
+    describe('simpleDate', function () {
+      var simpleDateFilter;
+      beforeEach(inject(function (_simpleDateFilter_) {
+        simpleDateFilter = _simpleDateFilter_;
+      }));
+
+      it('returns blank if nothing', function () {
+        expect(simpleDateFilter()).toBe('-');
+      });
+
+      it('returns the expected time', function() {
+        expect(simpleDateFilter('2016-06-24T04:19:07')).toBe('6/24/16 4:19 AM');
+      });
+    });
+
     describe('gb', function () {
       var gbFilter;
       beforeEach(inject(function (_gbFilter_) {