Clarify for anybody who can't find the interactive help
Robert Sprowson authored
Despite the help detailing how to advance the manual calendar by years using the SHIFT key modifier, seems that wasn't obvious enough.
Here, a second 'chevron' icon has been added so it looks like 'fast forward' on a video cassette recorder.
Updated the interactive help to describe this behaviour, for what it's worth.

Version 0.03. Tagged as 'TimeSetup-0_03'
e2601464