Restructure Prep, Prerequisites, and Installation guides to distinguish between required dependencies and optional ones

What steps does it take to reproduce the issue?

The Dataverse Prep, Prerequisites, and Installation guides lists not needed prerequisites and also misses needed dependencies. Namely R, RServer, project COUNTER and ImageMagick are optional dependencies to enhance the functionality but are listed in the prerequisites section. Requirements for the dvinstaller (python,curl) are not listed there.

• When does this issue occur?
  Documentation Page Prep
  Section Required Components move Rserve: runs as a daemon to execute R code. to the section Optional Components

Documentation Page Prerequisites list ImageMagick, R/Rserve and Counter Processor as prerequisites. Within the descriptive text its mentioned that those are optional but it easy to miss that. Hence, I propose to move those sections to the Advanced Installation Optional Components.

Documentation Page Installation lists additional and assume other requirements to execute the dvinstaller. pqsql is mentioned but for example python3, and curl are just assumed to be available. It would be nice to state those requirements within the Prerequisites page.

Start with the Prep, Prerequisites, Advanced Installation, and Installation pages linked in the issue, especially their Required Components, Optional Components, and prerequisite sections. Verify which dependencies are required versus optional, including the dvinstaller requirements, then update the guides so the categories and requirements are explicit and consistent.