Over the weekend, Wikia was targeted in an attack involving the injection of malicious Javascript that would steal user account information upon logging in to certain wikis. From what I can tell, this may have been an attack specifically against the Five Nights at Freddy's wiki, but a few other wikis were affected and compromised.
Acepedia was NOT compromised in this attack. However, if any of you guys got an email from Wikia concerning the attack and your account info, please read through it for more information (after making sure it's official, of course - don't accept spam!). If anyone is concerned regardless of getting contacted or not, you can obviously change your password at any time.
For the immediate future, Javascript has been disabled across Wikia. This affects the countdown script, Google Calendar widget, and poll on the Main Page, and who knows what else across the rest of the wiki. (CSS was disabled earlier as well, which may explain some weird things you may have seen like unformatted tabs on aircraft articles.) There is no timetable for the restoration of Javascript, and Wikia has already been in development of a more secure login system. Unfortunately, we have to bear it as best as we can.
For more information, click here for Wikia's official post on the matter.