UI Updates: New Home Page and My Collections Overlays
New Home Page and My Collections overlays to completely replace existing "start page" system per https://trello.com/c/CUGQrodT/147-home-page-my-collections-overlay-general-ui, https://trello.com/c/86b7wBek/189-home-page-overlay-specifics, https://trello.com/c/Gcwk89yj/190-my-collections-overlay-specifics and https://trello.com/c/4xrxKnLq/185-selection-of-new-featured-collections-list.

Final background color and featured item list TBD.

Note: This check-in includes all of the new functionality in a test menu but the old "start page" overlays are still in place. Therefore this version is for testing only, and should not be deployed to production without further changes. (Removal of old "start page" system.)
Merge branch 'master' into new-overlay
UI Updates: Featured Content Override

Changed web.config to illustrate how a different featured content list
could be used via an app key override.
UI Updates: Remove Start Page, Featured and Tweets
Cleanup Changes Made
--------------------

1. Removed old start page code and replaced with calls to new overlay code instead.
2. Removed test menu as no longer needed.
3. Removed featured API/code that runs on server-side for featured list.
4. Removed anything to do with Twitter/tweeting.
5. Fixed a few minor bugs encountered during cleanup.

Release Notes
-------------

This code is ready for testing as a potential release, but should *NOT* be pushed to production just yet.
The final Featured Items list is still being debated and we hope to have ideally nine items there.
Additionally, we are trying/debating what color or image to use as the new overlay background still.
So further minor changes will be checked in that will:
- Possibly touch /featured//featured.json
- Possibly include a couple more featured tile images in /featured/
- Probably involve a simple color change in css/overlay.less

In addition, web.config has some changes that should be deployed regarding the new overlays in general:
- Removal of a number of now redundant app keys.
- Addition of one new app key
- Removal of two redundant API references from the services section.
UI Updates: Prototype Theme System

Useful so we can experiment with several different looks.
UI Updates: 3 Themes Implemented for Overlay

Midnight Blue, Peabody Library, and Rosette Nebula. Still working on a
lighter solid background theme.
UI Updates: Arizona Parchment Theme

Added Arizona Parchment theme.
UI Updates: Cross Browser Compatibility

Reverted to @import url for font API to resolve some cross-browser
compatibility issues. Tested OK on IE, Chrome, Firefox and Safari.
UI Updates: Arizona Linen Theme + Logo Click Change

Added new theme per spec from Lori. Changed logo click to render home
page overlay instead of go to '/' URL. Changed View Tours panel to
display a "here is where you can find the Big History" type of message
and link if the current collection is not the Big History collection.
UI Updates: Publish Wording Change

Changed checkbox label and tooltip on the Customize Collection panel per
https://trello.com/c/B1wg2bkP/188-publicly-searchable-option-rewording
UI Updates: Added Splash Screen

Since the home page overlay backgrounds differ from the Big History
background, it looks kind of messy to partially see the underlying
collection and it's background before rendering the overlay. Plus the
Big History collection can be slow to load on a client so we want to
hide the initial load part. Solution for both was to have a "loading"
splash screen display first until ready to render the overlay or expose
the collection.
UI Updates: Initial Theme Fix

Fixed typo so Arizona Linen theme loads correctly on first visit.
Changing development port back to 80
Merge branch 'NeilCresswell-new-overlay'