Google Calendar API v3 Updates to Example site

This is my first GitHub use ever. I hope I've contributed in a fair way. I maybe should not have removed Calendar-Clean.csse but I didn't prepare a non-exampled version. My changes are limited to the external sources and FullCalendar upgrades needed to accommodate Google Calendar API v3.

I included all my edits as separate files here as well as in the Calendar_Examples_v7.12.csse export.