ScheduleForm, TemplateForm, ReportForm, and TimeFrameForm Refactoring

[TAINCER]

This removes the Multiple Submit Buttons Hacks from ScheduleForm, ReportForm, TemplateForm, and TimeFrameForm. it also adds PHPDocs and Typo annotation where possible.

fixes #164

[yhabteab]

That's still being used though!

icingaweb2-module-reporting/library/Reporting/Web/Controller.php

Lines 12 to 19 in 1760080

	protected function redirectForm(Form $form, $url)
	{
	if (
	$form->hasBeenSubmitted()
	&& ((isset($form->valid) && $form->valid === true)
	|| $form->isValid())
	) {
	$this->redirectNow($url);

[lippserd]

@yhabteab Do you want to have a final look here?

[yhabteab]

LFTM as well! :)