close #459: deps: possibility to declare dependence without explicit including item

Conflicts:
	lib/techs/deps.js.js
tests for serializing of `include: false` items
port to v2

Conflicts:
	lib/techs/v2/deps.js.js
add comments, xit -> it.skip

Conflicts:
	test/v2-deps.js
comments
Fix broken tests
Merge pull request #464 from bem/issues/459@release-1.0.0

deps: possibility to declare dependence without explicit including item