Use stable version of Refinery CMS.
Started work on 3.0.0.dev
Use GitHub repos to get latest version (3.0.0.dev) for refinerycms and refinerycms-testing.
Merge branch 'master' of https://github.com/refinery/refinerycms-i18n into refinery_light

Conflicts:
	Gemfile
	refinerycms-i18n.gemspec
derefinerization refinery plugin name
changed version number to one less problematic
removed .locales .locale css, used .icon-small instead
default frontend locale by current_refinery_user

+ removed unecessary regexp replaced with constants
  FRONTEND_LOCALES_KEYS and LOCALES_KEYS which can and are
  used also somewhere else.
  Related to refinerycms 27250fefa6e6947e4997
cleaning with in mind using i18n-iso639matrix