fix hard coded link issue
check if php version supports DateTime ( must be >= 5.2 )
Bug initially reported here : https://wordpress.org/support/topic/fatal-error-call-to-undefined?replies=15#post-6263058
translation updates
use of a timer instead of attaching handler directly to the window scroll event
@uses TCParams.timerOnScrollAllBrowsers : boolean set to true by default
adapt admin pages if pro context
add underscore dependency to js control
separate controls and call to action scripts in the customizer
add call to actions in the customizer