Added `global` and `curry` functions to JS API.
Added `map`, `each`, `head` and `tail` functions to store JS API.
Added `shuffle` and `trunc` to JS vector API.
Merge branch 'master' of github.com:qminer/qminer
Merge branch 'master' of github.com:qminer/qminer
Merge pull request #31 from blazf/master

bug fixes and new functions in JS API
Merge branch 'master' of github.com:qminer/qminer

Conflicts:
	src/qminer/qminer_js.h