Update optimer and fleetup javascript

Following on from the timerboard javascript update. Allows us to remove two 3rd party libraries that were stored in the repository. I've replicated the original display behavior as best I can while improving the maintainability significantly.

Also improves i18n thanks to moments locale files.

There is a question still in my head over the fat references to dateformat.js but I cant see anywhere that it would be used and get no javascript errors when its removed. I think its either just a copy paste relic or leftover from when there was some javascript in these pages.