I'd like to ask if one should include in the Class diagram also the jsp's needed for the admin component such as user/roles/permissions admin, admin for different things that needs to be created, edited etc. Also the question is about the need for an AdminManager. For example, to refer to Cade's example described in the book for JustBuildIt company, there will be needed pages where the admin can create new materials apart of Wood, Steel, Concrete and also should be able to add new characteristics for these materials, etc.
I noticed that in Cade's book these are not included.
To include all these will make the diagram heavier and less easy to follow.
What is your opinion?
In Cade's example the admin functions were not in the use cases, so no. Remember we are not implementing a complete system. Just the parts that are needed to satisfy the use cases in the provided assignment.