initial rework of reference.ru.md
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Update reference.ru.md

indents
Update reference.ru.md
edit 0.7 BEMJSON is returned.
Merge branch 'feature_doc' of https://github.com/Murdalay/bem-core into feature_doc
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bemhtml reference: update diagrams

    - replace onclick attribute with data-bem and new block parameters
    syntax ("return" wrapper is now obsolete).
    - update generated filenames to match current naming scheme
edit 0.9 Ready to review
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edit 0.9 fix 3 Ready to review.
edit 0.9 fix 4 Ready to review.
edit 1.0 Ready to merge.
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Update for the english version of BEMHTML reference.