Don't generate html pages if the data is missing

[aozalevsky]

Right now the write_html function

IHMValidation/ihm_validation/ihm_validator.py

Line 204 in abbf6b3

def write_html(mmcif_file: str, template_dict: dict, template_list: list, dirName: str):

simply iterates over the list of templates

IHMValidation/ihm_validation/ihm_validator.py

Lines 136 to 144 in abbf6b3

	template_flask = [
	"main.html",
	"data_quality.html",
	"model_quality.html",
	"model_composition.html",
	"formodeling.html",
	# "about_validation.html",
	# "validation_help.html",
	]

and generates all pages even if data (like SAS or CX validation) isn't available.

There has to be a set of additional checks/switches controlling that behavior.