Expose all project fields via GraphQL

[williamjallen]

This PR adds all of the missing Project fields and solidifies the database types to better enforce our constraints. I plan to follow this work with a new updateProject mutation.

[williamjallen]

Requesting a double review again. I'm mostly looking for feedback on these things:

• Naming choices
• Types
• Enum completeness
• Test thoroughness

[zackgalbreath]

We should add GitLab issues as a supported type of bug tracker (not in this PR)

[josephsnyder]

With these latest changes, there are several more broken links that appear on the Project menu that would originally have been hidden or valid links. Each of the broken links seem to go to http://unknown :

                            <li>
                                <a class="cdash-link" ng-href="http://unknown" href="http://unknown">Home</a>
                            </li>
                            <!-- ngIf: cdash.documentation.replace('https://', '').replace('http://', '').trim() !== '' --><li ng-if="cdash.documentation.replace('https://', '').replace('http://', '').trim() !== ''" class="ng-scope">
                                <a class="cdash-link" ng-href="http://unknown" href="http://unknown">Documentation</a>
                            </li><!-- end ngIf: cdash.documentation.replace('https://', '').replace('http://', '').trim() !== '' -->
                            <!-- ngIf: cdash.vcs.replace('https://', '').replace('http://', '').trim() !== '' --><li ng-if="cdash.vcs.replace('https://', '').replace('http://', '').trim() !== ''" class="ng-scope">
                                <a class="cdash-link" ng-href="http://unknown" href="http://unknown">Repository</a>
                            </li><!-- end ngIf: cdash.vcs.replace('https://', '').replace('http://', '').trim() !== '' -->
                            <!-- ngIf: cdash.bugtracker.replace('https://', '').replace('http://', '').trim() !== '' --><li ng-if="cdash.bugtracker.replace('https://', '').replace('http://', '').trim() !== ''" ng-class="::{endsubmenu: cdash.projectrole}" class="ng-scope endsubmenu">
                                <a class="cdash-link" ng-href="http://unknown" href="http://unknown"> Bug Tracker</a>
                            </li><!-- end ngIf: cdash.bugtracker.replace('https://', '').replace('http://', '').trim() !== '' -->
                            <li class="endsubmenu">
                                <a class="cdash-link" ng-href="http://localhost:8080/projects/2/members" href="http://localhost:8080/projects/2/members">Members</a>
                            </li>
                                                            <li class="endsubmenu">
                                    <a class="cdash-link" ng-href="http://localhost:8080/subscribeProject.php?projectid=2" href="http://localhost:8080/subscribeProject.php?projectid=2">Notifications</a>
                                </li>

With master, the Home link was a pointer to CDash and the others were hidden,

[josephsnyder]

Links look good now, no other visible issues on manual testing,