Update functions_edit.php

Added autocomplete to associate input field.
Polyfills for unpatched versions of PHP 5.3.2 - 5.3.6 not working.  They are probably not needed at all.
#278 - explicit deletion of user preferences
Performance - do not check fact privacy twice
Updated NB translation by Eyolf
PHPDoc
Users cannot visit 'my page' of trees for which they have only visitor access
Fix #1382999 / #277 - errors when a module stops implementing an interface
PHPDoc
HTML keyword examples fail when favorites module disabled
PHPDoc
Update functions_edit.php

Added _ASSO to associate autocomplete
PHPDoc
PHPDoc
Updated NN translation by hrn
PHPDoc
PHPDoc
PHPDoc
PHPDoc
PHPDoc / unit tests