add default to scss variables

Doing so allows one to override default variables when writing custom SASS that imports Ratchet's SASS.
Fix TypeError in sliders.js with non webkit browsers.
package.json: Add fonts keyword
bower.json: Add keywords property
bower.json: Add description property
Add more JSCS checks.
Remove padding from pre code.
Remove `zoom` from `.table-view`.
Gruntfile.js: use the existent variables everywhere.
Merge pull request #442 from twbs/typeerror

Fix TypeError in sliders.js
Merge pull request #499 from twbs/pre-code

Remove padding from pre code.
Simplify docs toggle cursor.
Fix `TypeError: Argument 1 of Node.compareDocumentPosition is not an object`.
Fix mobile navbar toggle on desktop.
remove borders from components
Merge pull request #493 from ZDroid/properties

Improve bower.json and package.json
Fix one letter typo.

Changes cacheing to caching.
Add the minimal-ui property to the basic template
Merge pull request #506 from sekjun9878/patch-1

Fix one letter typo.
does this fix tests?