WIP feat(syntax) Use HTML attributes for <template> parameters

Conflicts:
	docs/playground/splitter.hsp
	docs/samples/logs/logs.hsp
	test/compiler/errsamples/element6.txt
	test/compiler/errsamples/element7.txt
	test/gestures/doubleTap.spec.hsp
	test/gestures/drag.spec.hsp
	test/gestures/longPress.spec.hsp
	test/gestures/pinch.spec.hsp
	test/gestures/singleTap.spec.hsp
	test/gestures/swipe.spec.hsp
	test/gestures/tap.spec.hsp
	test/rt/cptattelements3.spec.hsp
	test/rt/cptattelements4.spec.hsp
	test/rt/evthandler.spec.hsp
WIP display suberrors on playground
WIP added some tests