Let View show error page if vplan data is missing

Signed-off-by: JWhy <jwhy@jwhy.de>
pure for cure (overview page)

Signed-off-by: JWhy <jwhy@jwhy.de>
Let View check if grade is set before using it

Signed-off-by: JWhy <jwhy@jwhy.de>
pure for cure (grade overview page)

Signed-off-by: JWhy <jwhy@jwhy.de>
Customize overview page pure button styles

Signed-off-by: JWhy <jwhy@jwhy.de>
Fix routing when date is specified in URL

Signed-off-by: JWhy <jwhy@jwhy.de>