Added basic retrieval of LESS variables (as defined in various files)
Got both the load and saving of the stylesheets working
Completed Color Management page.

Updated styling of page. Updated model to ignore variable declarations that are not valid CSS colors. Also, added comments to the model to allow easier modification in the future.
Changed icon for color menu item
Updated save process to reload the files on success of all changes
Implement clear-cart
Merge branch 'respond2.10' of https://github.com/madoublet/Respond2 into add_color_management_menu

Conflicts:
	modules/menu.php
Merge pull request #146 from matthewdickinson/add_color_management_menu

Add color management menu
Merge remote-tracking branch 'upstream/respond2.10'
Colors update, clone, bootstrap version update
Merge remote-tracking branch 'upstream/respond2.10'
Remove Site ID dependencies from site API
Merge remote-tracking branch 'upstream/respond2.10'
add back in the redirect on login
version bump, minor css fix
pages marked as secure are no longer part of the generated sitemap.xml #153
Use right currency in skuDialog #142
Update head.min.js #70
Add possibility to add a target for a link #147
Rename setup.php to setup-dist.php (or setup.php.dist) to avoid git conflicts #127