Fixed issue where form refused to submit due to two bugs:
#1: The form needs to be instantiated first, so we simulate a click on the reminders link, lettings Facebook do so. The form gets hidden immediately again
#2: The form did not react to a simulated return from the extension, so that code has been injected directly into the DOM, where it is now run locally
The initial timeout has been increased to 5 seconds to give Facebook the time to fully get up and running. Otherwise the hidden popup may not have been generated yet