Port i18n techs and library code from bem-bl

Fix #26
Get rid of qq usage in i18n.html tech module
Get rid of qq usage in i18n.js tech module
Get rid of qq usage in i18n.keys.js tech module
Add dom-js dependency
port fresh version from bem-bl@0.3
working version for i18n.browser.js+bemhtml.js, except invalidation by i18n-files (see #165).