SYSMOAS_ — created needs to be consistent

Fig 5 Project, Commit, CommitReference all have created as a attribute, But many of the examples (and some of the text have timestamp).. needs to be consistent… I like “created” as it tells one what the timestamp is for

and deleted as the other timestamp name

Ensure consistent naming of created and deleted timestamps

As described in the issue, the timestamp properties are inconsistently named in the text of subclause 7.1.2 compared to Figure 5 in the PIM model. The proposal is to consistently rename them to created and deleted properties wherever such a discrepancy occurs, and to show the properties consistently in Figure 5 and the text.