Handle JSON request to /p/create

The Pillar Python SDK posts JSON, so we should handle that too.

pillar/application/modules/projects.py

@@ -225,6 +225,9 @@ def _create_new_project(project_name, user_id, overrides):
 def create_project(overrides=None):
     """Creates a new project."""
 
+    if request.mimetype == 'application/json':
+        project_name = request.json['name']
+    else:
         project_name = request.form['project_name']
     user_id = g.current_user['user_id']