gplugin/gplugin

Add an error property to GPluginPlugin and fix the ui/tests/etc that were affected by it.
feature/plugin-errors
2020-04-18, Gary Kramlich
16a5cfcf0961
Add an error property to GPluginPlugin and fix the ui/tests/etc that were affected by it.
[branchname]
master = default
develop = develop
feature = feature/
release = release/
hotfix = hotfix/
support = support/