Fix improper call to removeEventListener

eventProvider.js was using event handler function as single argument.

Fixes #1028, #1049, #1091, #1095
Merge remote-tracking branch 'upstream/2.0.8' into fix_selection_issue

Conflicts:
	build/ng-grid.debug.js
	build/ng-grid.js
	build/ng-grid.min.js
	ng-grid-2.0.8.debug.js
	ng-grid-2.0.8.min.js