Replacing t&c checkbox with words in the UI and docs
Merge pull request #95 from hbeeken/bug93-remove-checkbox

Replacing tfl t&c checkbox with words in the UI and docs
Refactor sending a calendar event message.
Add Google Calendar node to inject messages for calendar events.
Add calendar input node test.
Add support for offsets from the beginning of event.
Implement triggering relative to end time.
Improving result paging logic.
Test looking up calendar by name.