Update ckeditor to 4.5.10 version

Upgrade ckeditor to version 4.4.7 and bugs fixes

Bump gem version to 4.0.10

Bump version to 4.0.9

Allow configure locales and ckeditor modules

Merge pull request galetahub#356 from ideadapt/patch-1

Update rake task to create non digest assets

Set version to RC

Bug fixes