Allow a non-credentialed deployment

[Jeff-Thompson12]

Addresses #700

[codecov[bot]]

Codecov Report

Attention: 116 lines in your changes are missing coverage. Please review.

Comparison is base (12e418d) 78.12% compared to head (b6fb751) 77.19%.

Files	Patch %	Lines
R/mod_user_roles.R	1.09%	90 Missing :warning:
R/app_server.R	33.33%	6 Missing :warning:
R/mod_decision_automation.R	61.53%	5 Missing :warning:
R/mod_reportPreview.R	40.00%	3 Missing :warning:
R/utils_config_db.R	50.00%	3 Missing :warning:
R/utils_startup.R	81.81%	2 Missing :warning:
R/mod_addComment.R	75.00%	1 Missing :warning:
R/mod_communityMetrics.R	50.00%	1 Missing :warning:
R/mod_introJS.R	50.00%	1 Missing :warning:
R/mod_maintenanceMetrics.R	50.00%	1 Missing :warning:
... and 3 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev #703 +/- ## ========================================== - Coverage 78.12% 77.19% -0.94% ========================================== Files 33 33 Lines 4897 4964 +67 ========================================== + Hits 3826 3832 +6 - Misses 1071 1132 +61 ```

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[AARON-CLARK]

@Jeff-Thompson12, after recent merges, there is now a conflict on this branch.

[AARON-CLARK]

I think this looks really good. The only thing I would advise is to test out creating roles within our Posit Connect environment before merging. That way, we can see if they behave as we expect them to.

Nice work!