Weed out duplicate database requests in templates

[oliverroick]

Templates currently create a lot of duplicate database requests. For instance, every time we call something like {{ project.organization.name }} the organization object is queried from the database. Model object that are used multiple times in a template should be queried once and added to the view's template context.

[seav]

I suggest that a follow-up action to help reduce database accesses is to also resolve #572. If we convert many modals into pages, then we don't need to access the database to render the data hiding behind the modals that can't be interacted with anyway.