Edits to Section 4.1.4 Objects

I've incorporated all of Paul's edits into this PR as well as some ADL edits.  Sections reworked, tables reworked.  Mostly requirements aggregation.  Tried to move requirements out of tables.  Opened an issue surrounding "url" as a property, which may require another PR on this.  Also, took out language around tenses that came up around Sub-Statements as it introduced requirement language in a note.  Suggest we add requirements for tense into the verb section and reference the Sub-Statement example.