docs: Updating documentation regarding element names and addressing.

This commit does the following:

  * Move the section about rules on element naming to the beginning
    of the document instead of the end.

    Element names are probably the first thing you need to know about
    elements, not the last.

  * Expand this element naming section to also speak about element
    addressing, and how to express element paths and how these
    can be used across the boundaries of multiple junctions.

    It helps to have a single place to discuss this and link to
    in the documentation, instead of repetitively explaining in
    multiple places that one must specify a filename relative
    to a project's element path.

  * Update documentation about dependencies to refer to the
    element naming and addressing documentation.

  * Update the documentation in the `link` and `junction`
    elements to link back to the element name documentation.

0 files changed, 0 insertions, 0 deletions