HOWTO: install ckeditor in zms-distribution
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1. Upload build-config.js to http://ckeditor.com/builder
2. Download custom build as zip
3. Extract to /ckeditor.
4. Remove /ckeditor/samples.
--5. Copy /ckeditor/lang to /ckeditor/lingua.
--6. /ckeditor/ckeditor.js: replace '"lang/"' by '"lingua/"'
7. /ckeditor/config.js: overwrite with file from zms-distribution
