Prevent blocks to reinitialize during destructing
travis: Do not test on node 0.8 and 0.9
bemhtml: fix fast match when invoking without ctx
Check for block#destruct() has been called already

Fix for "TypeError: 'undefined' is not an object evaluating
'_this.dropElemCache().domElem.each'" if `block#destruct()`
has been called several times.
support old attrs onclick and ondblclick for good backward compatibility
Building docs with ENB
Update package.json
Fixed doc build
Update description
Add Russian description
Upped `enb-xjst` to `1.2.0`