KRACOEUS-6631:fixed attachment validation issues, and fixed customizers ...

...to seperate institute attachments and narratives

1.)Fixed narrative & insitute attachment customizer classes, so the collections are filtered when retrieved from db instead of when navigating to the attachments page.
2.)changed propsciencekeyword, proposalperson, and propspecial review to use filtergenerator annotation instead of customizers
3.)removed required property from attachment file name, so place holder attachments don't violate validation