added nl.yml language
API Removed related pages functionality, this is now a separate module

If you need this functionality still, please checkout
github.com/silverstripe-labs/silverstripe-subsites_relatedpages
Removing bits of test that broke because of removal of related pages
Style site selector dropdown

Made dropdown receive chzn, and applied a dark style to the dropdown to
match the ui of the cms
Merge pull request #79 from adrexia/ui

Style site selector dropdown
Allow core dependencies in dev-master through composer
Removing underscore from "Default site" text
Fixing declaration of statics to private for 3.1+ compatibility
Fixing more statics that weren't private, and nested_urls deprecated usage
Defining static as private for 3.1+
Fixing more uses of statics in Subsite class
Partially reverting 7c5310e1a2
Fixing test for PostgreSQL
Fixing incorrect order of items in array for test
Fixing test for postgres, make sure the array is indexed from 0
Merge pull request #67 from ARNHOE/patch-1

added nl.yml language
fixing test to check for all extended cache keys, not just the immediate
Fixed composer constraints
BUG LeftAndMainSubsites::Subsites() fails with limited CMS access

Users with non-ADMIN permissions won't see the dropdown of available
subsites, because LeftAndMainSubsites::Subsites() will check if
the user has a non-existent code CMS_ACCESS_CMSPagesController.

Fallback to checking required_permission_codes first, and failing
that, check for CMS_ACCESS_LeftAndMain
Updating docs for 3.x, the location of subsites dropdown changed.