Use the `PLATFORM_NAME` setting instead of "edX"

Much like the work done on the default (unauthenticated) index view,
adjust the background image (actually, let the CSS handle it instead
of an embedded `style` attribute in the HTML). Other adjustments
(language, logo) are made for Stanford specifically and need to be
reworked for general theming.

Use the theme's own Google Analytics template (should probably
update to just use parameters once the default GA template is kept
up-to-date). Don't link to the university profile page when a theme
is enabled, as that's an edX-specific feature. Adjust social links
for Stanford, but leave them alone for everyone else (this is just
a hack for the 6/11/13 launch).

Again, most of the work here is replacing "edX" with the
`PLATFORM_NAME` setting. Need to ensure that the `news` boolean is
indeed a falsy value as well, or just add a `theme_enabled()` test
to disable the news block entirely (since news is an edX-specific
feature).

When a non-edX theme is enabled, then don't return anything for "top
news," which is edX-specific.

As with the registration page, the bulk of the theming work here is
replacing instances of "edX" with the `PLATFORM_NAME` setting. There
is also a change to the "help" section, disabling it if the FAQ
marketing link isn't set.

This mostly involves rewriting all mentions of "edX" to reference the
`PLATFORM_NAME` setting instead. However, there are also some
Stanford-specific rewrite hacks that need to be pulled out
eventually. Additionally, don't display links to marketing pages (or
the sections referencing those marketing pages) if the links are not
defined by the theme.

This setting is used to control the display name of the platform. The
default is "edX", but themes may wish to override. For example,
Stanford will use "Stanford Online" for the time being.

Adjust the now-defunct landing page so that it doesn't render much
of the edX-specific marketing info (social links, press releases,
university partners, etc.) if a theme is enabled.

Additionally, if the Stanford theme is enabled, add in some school-
specific language and adjust the video modal to play a Stanford one.

Allow themes to inherit from the default navigation bar and override
pieces of it, including the main logo, the links that display to the
right of the logo, and the links inside the dropdown menu (with the
exception of the `Log Out` link.

In addition, this adds an empty block at the very top so that themes
can place a branding bar at the top of the page. (Stanford identity
guidelines require this: see https://identity.stanford.edu.)

The `FAVICON_PATH` setting determines the location of the favicon for
the site. It's automatically adjusted when a theme is enabled,
establishing the convention that themes will place their favicon in
`static/images/favicon.ico`.

Provide the appropriate switches to adjust based on whether or not a
theme (in particular, the Stanford theme) is enabled in the settings.
For now, these changes are very specific to Stanford. This is because
the template architecture needs some reworking to generalize nicely.

Feature/cdodge/allow setting of session cookie name

Ensure that the original error gets preserved by the ErrorModule

allow configuration settings to specify a session cookie name. This is to avoid problems we are experiencing between simultaneous login sessions between edx.org and edge.edx.org on certain browsers (i.e. Firefox)

allow configuration settings to specify a session cookie name. This is to avoid problems we are experiencing between simultaneous login sessions between edx.org and edge.edx.org on certain browsers (i.e. Firefox)

Jonahstanley/fix codemirror tests

Expose site-wide anonymized ids to HTML module

Use coffee watch command to watch whole directories, so that it will pic...

It turns out that code mirror things can be edited.  Once the div is clicked, a new text area appears that can be obtained and sent keys

Unbreak acceptance tests in the cms.

Specify UTF-8 encoding when loading Mako template

LMS Slim Header Visual Clean-Up

Turn off automatic snapshot to tmp dir on lettuce failure

lms - revises the physical height of the edX logo within the slim-sized header and vertically aligns all elements

Add comment to dynamically-generated asset files

To avoid confusion about where these files come from, add a header
comment upon preprocessing that warns people to not modify the
generated files directly, and points them to the appropriate
template file.

Peter fogg/single click video creation

adding sympy and networkx

Fix bug STUD-103. The url base for about page links needs to be www.edx....

Use coffee watch command to watch whole directories, so that it will pick up new coffee files as they are created

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