Don't show 'link to calendar' unless you can actually do that (fixes #1190)

Signed-off-by: Michael Eshom <oldiesmann@oldiesmann.us>
Merge pull request #1192 from Oldiesmann/release-2.1

Don't show 'link to calendar' unless you can actually do that (fixes #1190)
Merge pull request #1198 from Arantor/release-2.1

Buglet zapping