Provide wiki pages for projects

Summary:
Provide tighter integration between Projects and Phriction. Partly, I have most
of a rewrite for the Projects homepage ready but it's not currently possible to
publish feed stories about a project so all the feeds are empty/boring. This
partly makes them more useful and partly just provides a tool integration point.

  - When you create a project, all the wiki pages in projects/<project_name>/*
are associated with it.
  - Publish updates to those pages as being related to the project so they'll
show up in project feeds.
  - Show a project link on those pages.

This is very "convention over configuration" but I think it's the right
approach. We could provide some sort of, like, "@project=derp" tag to let you
associated arbitrary pages to projects later, but just letting you move pages is
probably far better.

Test Plan:
  - Ran upgrade scripts against stupidly named projects ("der", "  der", "  der
", "der (2)", "  der (2) (2)", etc). Ended up with uniquely named projects.
  - Ran unit tests.
  - Created /projects/ wiki documents and made sure they displayed correctly.
  - Verified feed stories publish as project-related.
  - Edited projects, including perfomring a name-colliding edit.
  - Created projects, including performing a name-colliding create.

Reviewers: btrahan, jungejason

Reviewed By: btrahan

CC: aran, epriestley, btrahan

Maniphest Tasks: T681

Differential Revision: 1231

src/applications/project/controller/create/PhabricatorProjectCreateController.php

@@ -33,18 +33,20 @@ class PhabricatorProjectCreateController
     $errors = array();
     if ($request->isFormPost()) {
 
-      $project->setName($request->getStr('name'));
+      try {
+        $editor = new PhabricatorProjectEditor($project);
+        $editor->setUser($user);
+        $editor->setName($request->getStr('name'));
+        $editor->save();
+      } catch (PhabricatorProjectNameCollisionException $ex) {
+        $e_name = 'Not Unique';
+        $errors[] = $ex->getMessage();
+      }
+
       $project->setStatus(PhabricatorProjectStatus::ONGOING);
 
       $profile->setBlurb($request->getStr('blurb'));
 
-      if (!strlen($project->getName())) {
-        $e_name = 'Required';
-        $errors[] = 'Project name is required.';
-      } else {
-        $e_name = null;
-      }
-
       if (!$errors) {
         $project->save();
         $profile->setProjectPHID($project->getPHID());