[refactor] change flow(acct, fixed), clean code

[refactor] change flow(acct, fixed), clean code

* change print_t flow
	read the config tasks
	select applicable for today
	calculate total duration
	calculate accepted tasks
	get fixed tasks
	copy accepted from config tasks
	copy fixed from accepted
	calculate duration between each 2 fixed start times
	calculate actual sum duration and compare
	fail if not match
	copy accepted tasks to returned Task_t array

* clean code
	remove uneeded functions
	remove complexity