Modded CSS + add JQuery magic for rendering the LP15 log and Date-Place the way Zak...

Modded CSS + add JQuery magic for rendering the LP15 log and Date-Place the way Zak wants.

Also, common JS used by all pages are now at
/server/2015/common_js.html. All pages under /2015/ now, except the
pages under /2015/scholarships/ includ /server/2015/common_js.html.

	modified:   2015/anti-harassment/index.html
	modified:   2015/assets/css/custom.css
	modified:   2015/call_for_sessions/confirmation.html
	modified:   2015/call_for_sessions/index.html
	modified:   2015/confirmation.html
	modified:   2015/discussion_list/index.html
	modified:   2015/exhibit/confirmation.html
	modified:   2015/exhibit/index.html
	modified:   2015/exhibit/payment_confirmation.html
	modified:   2015/fixed.html
	modified:   2015/getting_around/index.html
	modified:   2015/index.html
	modified:   2015/mailing-list/index.html
	modified:   2015/mailing_list.html
	modified:   2015/volunteer/confirmation.html
	modified:   2015/volunteer/index.html
	modified:   server/2015/ahp_js.html
	modified:   server/2015/banner.html
	modified:   server/2015/cfs_js.html
	new file:   server/2015/common_js.html
	modified:   server/2015/exhibit_js.html
	modified:   server/2015/getting_around_js.html
	modified:   server/2015/home_js.html
	modified:   server/2015/mailing_list_js.html
	modified:   server/2015/volunteer_js.html