выбор по слою
Merge branch 'zemlya' into intersect
добавлен механизм выбора полей
недоделал intersect
недоделал intersect2
Merge branch 'zemlya' into intersect

Conflicts:
	public/js/geoworks/gwmain.js
	views/gwappscripts.jade
	views/navigate.jade
доделал intersect
Merge branch 'zemlya' into intersect