(Bug 5241) Fix whitespace and long lines; update revision date.

- Rewrap excessively long lines

- Remove trailing whitespace

- Update "last revised" date to today
Merge pull request #554 from afuna/bug5238-no-post_args

(Bug 5238) Return an empty hashref instead of undef
(Bug 5241) Reword TOS to omit mention of invite codes.

Invite codes are no longer required - update the terms to reflect reality.
(bug 5205) Add admin post status to ESN notifs
Merge pull request #558 from anall/feature/bug5205

(bug 5205) Add admin post status to ESN notifs
Merge pull request #555 from kareila/bug5241-tos

(Bug 5241) Reword TOS for optional invite codes.
Merge branch 'release-1.18' into develop

* release-1.18:
  (Bug 5238) Return an empty Hash::MultiValue in case POST was invalid
  (Bug 5238) Return an empty hashref instead of undef
(Bug 5243) Double Header on support/stock_answers

Removed duplicate header.
Merge pull request #561 from hotlevel4/bug5243/SupportStockAnswersHeaders

(Bug 5243) Double Header on support/stock_answers
(Bug 5073) Start converting gradation to Foundation
(Bug 5073) Convert Gradation Horizontal to Foundation

* includes refactoring some code from celerity into the common
  schemes/_nav.scss
(Bug 5073) Convert Gradation Vertical

Involves code changes in other areas as part of moving around shared
styling
(Bug 5073) Clean up Gradation footer styling
Merge pull request #563 from foxfirefey/gradationvertical

Gradationvertical
(Bug 5181) Calling "prop" on an undefined value

Checks that $u is defined before calling prop.
Merge pull request #564 from hotlevel4/bug5181/CallingPropOnUndefinedValue

(Bug 5181) Calling "prop" on an undefined value
Add automatic orientation of images

Depending on which way you hold your camera, the JPG image that comes
out might be in any number of 8 different orientations. Some browsers
handle these one way, some another, and at the end of the day it's all a
big mess.

Instead of relying on browsers to handle and display the images, we've
decided to orient them on upload. This will give images the best chance
of being viewed correctly wherever they are shown.
(Bug 5073) Add skiplinks to the foundation version of the site skins
(Bug 5073) Fix the nav search alignment

* adds space to the right
* remove styling from form elements, make them the same height
* remove alignmen as columns. We don't need the extra alignment /
  spacing within the header search itself
(Bug 5073) Don't show the drag and drop interface for touchscreens