WP_w3all 1.5.5 just released to fix security bug

[axew3]

After the latest 1.5.4 release of few hours ago, i'm sorry to be compelled and release this fever 1.5.5 immediately after, to resolve a (maybe secondary) security issue i've discover this morning on a fast code review.
Please update as soon.

= 1.5.5 =
*Release Date - 8 Nov, 2016*

* Fix a security bug.

= 1.5.4 =
*Release Date - 7 Nov, 2016*

* Fix avatars bug. Should be the definitive fix that should resolve all reported bugs about avatars.
* Fix more secondary bugs.
* Fix some English hints on WP_w3all admin config page.