add basic home, admin pages

- index no longer requires login, it's just a big fat login button
- home has stop, start, admin buttons
- admin doesn't do anything yet
- add jhapi javascript client for REST API

jupyterhub/handlers/pages.py

@@ -0,0 +1,55 @@
+"""Basic html-rendering handlers."""
+# Copyright (c) IPython Development Team.
+# Distributed under the terms of the Modified BSD License.
+
+from tornado import web
+
+from .. import orm
+from ..utils import admin_only, url_path_join
+from .base import BaseHandler
+
+
+class RootHandler(BaseHandler):
+    """Render the Hub root page.
+    
+    Currently redirects to home if logged in,
+    shows big fat login button otherwise.
+    """
+    def get(self):
+        if self.get_current_user():
+            self.redirect(
+                url_path_join(self.hub.server.base_url, 'home'),
+                permanent=False,
+            )
+            return
+        
+        html = self.render_template('index.html',
+            login_url=self.settings['login_url'],
+        )
+        self.finish(html)
+
+class HomeHandler(BaseHandler):
+    """Render the user's home page."""
+    @web.authenticated
+    def get(self):
+        html = self.render_template('home.html',
+            user=self.get_current_user(),
+        )
+        self.finish(html)
+
+
+class AdminHandler(BaseHandler):
+    """Render the admin page."""
+    @admin_only
+    def get(self):
+        html = self.render_template('admin.html',
+            user=self.get_current_user(),
+            users=self.db.query(orm.User),
+        )
+        self.finish(html)
+
+default_handlers = [
+    (r'/', RootHandler),
+    (r'/home', HomeHandler),
+    (r'/admin', AdminHandler),
+]