changes related to makefile, structure and names of top-level sections

...rs/Sphinx/source/Documentation/Input/fortran_makefile.rst

...evelopers/Sphinx/source/Documentation/Input/jobscript.rst

For_developers/Sphinx/source/Documentation/Input/setup.rst

For_developers/Sphinx/source/Documentation/disagg.rst

For_developers/Sphinx/source/Installation/local.rst

For_developers/Sphinx/source/Installation/remote.rst

For_developers/Sphinx/source/documentation.rst

For_developers/Sphinx/source/index.rst

For_developers/Sphinx/source/installation.rst

For_developers/Sphinx/source/quick_start.rst