MDL-32917 YUI2 to YUI3 Calendar port: only display the date from the matching selector and display the month/year matching the selector value
Merge branch 'MDL-32917-master-nomerge3' of git://github.com/mouneyrac/moodle
Revert "MDL-32917 YUI2 to YUI3 Calendar port: only display the date from the matching selector and display the month/year matching the selector value"

There are numerous bugs with this new module to do with showing the currently selected date,
random changes in the selected dates, showing multiple selected dates and css errors.

This reverts commit 1d128663f69be8b60fc28b6b7732acd24d800a98.
This reverts commit 4a521e6596918279fd0cdeb47d06e7906bc004cc.