Calculate topbar distance on window resize

If a element of the page is resized on window, distance must be
recalculated when sticky is enabled
Top bar link hover background color was being ignored due to small SCSS error. This fix causes the hover link color and background variables to be respected since they're being applied in the correct selector.
Added SCSS for Top Bar to degrade gracefully when Javascript is disabled.

When Javascript is disabled, allows dropdowns to appear on hover, and
also allows top bar menu items' background and font color to change on
hover.
Reset content width and height in mobile
Re-organized pagination code to support user-defined class names for all elements
Do not set the global li font color - less flexible than controlling on a per-selector basis
Improved `chars` String for the `random_str` method: "T" was present 2 times, but the "Y" was missing. The "j" was also missing.
Merge pull request #2597 from herom/master

Improvement: Enhance the 'chars' String of the 'random_str' method in foundation.js
Fixed mobile topbar

- The top bar menu was not showing all child elements from the second level and up in the mobile state.
- Fixed a height issue.
Add middleman template to readme
Merge pull request #2604 from mattolson/master

Add middleman template to readme
Merge pull request #2568 from MekZii/master

Mobile topbar fixed
Update ZURBjobs widget to be asynchronous.
Update rails.html.erb

You get the error - File to import not found or unreadable: foundation/common/ratios 
if you don't have the compass-rails gem
Added Silverstripe theme to Readme
Removed unnecessary whitespace from Readme
Fixed typo on Javascript page
fixed typo on thumbnail page in the mixin section
Tighten up the Rails feature detection to deal with Rails 2 apps that have Sprockets installed as seperate middleware.
Merge pull request #2481 from aparis/topbar-window-resize

Calculate topbar distance on window resize