Slider pagepart
added documentation and changes for old IE versions
Added a custom test for box sizing to the gruntfile
optimized images
Merge branch 'feature/slider' of github.com:Kunstmaan/cupcake into feature/slider

* 'feature/slider' of github.com:Kunstmaan/cupcake:
  Added a custom test for box sizing to the gruntfile
boxsizing and display:table fallbacks
grunt file adjustment for automatic search of features
Added extra variables in the config file & fix for the direction nav buttons issue in IE7
solved merge conflicts
commented bourbon & components
modified code after feedback
deleted unnecessary files
Merge branch 'feature/slider' into develop

* feature/slider:
  deleted unnecessary files
  modified code after feedback
  commented bourbon & components
  Added extra variables in the config file & fix for the direction nav buttons issue in IE7
  grunt file adjustment for automatic search of features
  boxsizing and display:table fallbacks
  optimized images
  Added a custom test for box sizing to the gruntfile
  added documentation and changes for old IE versions
  Slider pagepart

Conflicts:
	Gruntfile.js
	package.json
	scss/base.scss
	scss/components/_components.scss
	scss/config/_config.scss