Moved chrome-password-manager-fix.html to app/

In #617 @deckar01 says `chrome-password-manager-fix.html` should 405 on POST requests. However it's now returning 404 because it's in wrong directory.

![screenshot from 2014-08-14 18 47 02](https://cloud.githubusercontent.com/assets/464938/3923354/aac1b778-23d2-11e4-9dc6-2b47052bce81.png)