Minor improvements to Applications application

Summary:
I missed these in review, but here are a couple of tweaks:

  - Call `setWorkflow(true)` on the actions. This makes the dialogs pop up on the same page with Javascript if it's available.
  - When the user installs/uninstalls an application, send them back to the application's detail page, not the application list.

Test Plan:
  - Uninstalled an application (saw dialog, got sent back to detail page).
  - Installed an application (saw dialog, got sent back to detail page).
  - Canceled an application uninstall.

Reviewers: Afaque_Hussain

Reviewed By: Afaque_Hussain

CC: aran

Differential Revision: https://secure.phabricator.com/D4762

src/applications/meta/controller/PhabricatorApplicationDetailViewController.php

@@ -90,6 +90,7 @@ final class PhabricatorApplicationDetailViewController
                id(new PhabricatorActionView())
                ->setName(pht('Uninstall'))
                ->setIcon('delete')
+               ->setWorkflow(true)
                ->setHref(
                 $this->getApplicationURI(get_class($selected).'/uninstall/'))
                );
@@ -98,6 +99,7 @@ final class PhabricatorApplicationDetailViewController
                id(new PhabricatorActionView())
                ->setName(pht('Install'))
                ->setIcon('new')
+               ->setWorkflow(true)
                ->setHref(
                  $this->getApplicationURI(get_class($selected).'/install/'))
                );
@@ -107,6 +109,7 @@ final class PhabricatorApplicationDetailViewController
              id(new PhabricatorActionView())
              ->setName(pht('Uninstall'))
              ->setIcon('delete')
+             ->setWorkflow(true)
              ->setDisabled(true)
              ->setHref(
                $this->getApplicationURI(get_class($selected).'/uninstall/'))