remove redundant headings

public/docs/dart/latest/tutorial/toh-pt1.jade

@@ -1,8 +1,6 @@
 include ../_util-fns
 
 :marked
-  # Once Upon a Time
-
   Every story starts somewhere. Our story starts where the [QuickStart](../quickstart.html) ends.
 
 :marked

public/docs/dart/latest/tutorial/toh-pt2.jade

@@ -1,7 +1,6 @@
 include ../_util-fns
 
 :marked
-  # It Takes Many Heroes
   Our story needs more heroes.
   We’ll expand our Tour of Heroes app to display a list of heroes,
   allow the user to select a hero, and display the hero’s details.

public/docs/dart/latest/tutorial/toh-pt4.jade

@@ -1,7 +1,6 @@
 include ../_util-fns
 
 :marked
-  # Services
   The Tour of Heroes is evolving and we anticipate adding more components in the near future.
 
   Multiple components will need access to hero data and we don't want to copy and

public/docs/ts/latest/tutorial/_data.json

@@ -32,6 +32,7 @@
   },
   "toh-pt6": {
     "title": "HTTP",
+    "subtitle": "Getting and saving data",
     "intro": "We convert our service and components to use Angular's HTTP service",
     "nextable": true
   }

public/docs/ts/latest/tutorial/index.jade

@@ -2,9 +2,7 @@ block includes
   include ../_util-fns
 
 :marked
-  # Tour of Heroes: the vision
+  Our grand plan for this tutorial is to build an app to help a staffing agency manage its stable of heroes.
-
-  Our grand plan is to build an app to help a staffing agency manage its stable of heroes.
   Even heroes need to find work.
 
   Of course we'll only make a little progress in this tutorial. What we do build will

public/docs/ts/latest/tutorial/toh-pt1.jade

@@ -1,8 +1,6 @@
 include ../_util-fns
 
 :marked
-  # Once Upon a Time
-
   Every story starts somewhere. Our story starts where the [QuickStart](../quickstart.html) ends.
 
   Run the <live-example></live-example> for this part.

public/docs/ts/latest/tutorial/toh-pt2.jade

@@ -1,7 +1,6 @@
 include ../_util-fns
 
 :marked
-  # It Takes Many Heroes
   Our story needs more heroes.
   We’ll expand our Tour of Heroes app to display a list of heroes,
   allow the user to select a hero, and display the hero’s details.

public/docs/ts/latest/tutorial/toh-pt4.jade

@@ -1,7 +1,6 @@
 include ../_util-fns
 
 :marked
-  # Services
   The Tour of Heroes is evolving and we anticipate adding more components in the near future.
   
   Multiple components will need access to hero data and we don't want to copy and 

public/docs/ts/latest/tutorial/toh-pt5.jade

@@ -9,8 +9,6 @@ block includes
   - var _redirectTo = 'redirectTo'
 
 :marked
-  # Routing Around the App
-
   We received new requirements for our Tour of Heroes application:
 
   * Add a *Dashboard* view.

public/docs/ts/latest/tutorial/toh-pt6.jade

@@ -12,8 +12,6 @@ block includes
 - var _promise = _Promise.toLowerCase()
 
 :marked
-  # Getting and Saving Data
-
   Our stakeholders appreciate our progress.
   Now they want to get the hero data from a server, let users add, edit, and delete heroes,
   and save these changes back to the server.