Update French Calendar to 1.6.1 (161)

Closed username-removed-69508 requested to merge caarmen/fdroiddata:french-calendar-161 into master

Translated the app into Italian.

Please let me know if there's anything I can do to the gradle config of the FRCAndroidWidget project, so you don't have to add some sed/echo patches :)

Looks like it was ok for versions 1.4.1, 1.5.0, and 1.5.1, but for some reason, there was an issue for 1.6.0.

Many thanks!