Bug 5175: Add missing Title + Subtitle to 3 styles

- Britle:
    Supplement propgroups and CSS to display and customize Title,
    Subtitle, Pagetitle.
- Negatives:
    Supplement Page::print to add call to print_global_title() and
    print_global_subtitle().
    Supplement propgroups and CSS to display and customize Title
    and Subtitle.
- Skittlish Dreams:
    Supplement Page::print to add call to print_global_subtitle().
    Supplement propgroups and CSS to display and customize Title
    and Subtitle.
Fix divs that should only be included for the foundation case
Upgrade to Foundation 4.3
Our tweaks to the foundation included files and variables
Fixes logged out account links
(bug 5224) twfeed.com provides alternate twitter feeds, treat as twitter://

( also score feedburner urls )
Fix stray debugging code
Merge pull request #540 from anall/feature/LookupRoutingDebug

Fix stray debugging code in lookup-routing
Merge pull request #539 from anall/feature/bug5224

(bug 5224) Update feed token generator for twitter feeds going away
Fix account links in celerity

* moves common formatting of nav to htdocs/scss/schemes/_nav.scss
Make the celerity menus responsive
Expand the width the acount links can take up
Fix display issues at bottom of celerity menu

Two reasons:
* unclosed div
* position: relative messing with how it interacts with other elements
  at the bottom of the page
Make sure we apply clearing to #content no matter the screen size

Was previously within a media query, which meant that thinsg grew wonky
at particular screen sizes
Fix search bar in celerity
No more need for IE6 hack

Rest of our frontend no longer supports IE6, so this wouldn't make a big
difference if it disappeared.
Bug 2977: Stop #tertiary modules from breaking out

- Britle:
    Stop #tertiary modules from breaking out of their container.
    Modules concerned: powered, tags_cloud, time.
Make make_system work for extlib

EOM.
Use correct MIME type for PNGs
(Bug 5135) Add bulk resized image support

This lets the /file/edit page load resized images so it doesn't force
you to load the full image. Additionally, this makes it so that the URL
returned is always the same as the input width/height, which makes for a
more consistent UI.

This also fixes the image/x-png MIME type that File::Type returns, which
causes Chrome to want to download the image.