[LANGS] Add Finnish language

Translated by -Anevo- (Habbo.fi)
[CHANGED] Update jQuery to 1.11.1

Enhance performance?
[CHANGED] Design tweaks
[NEW] Friends in common
Release 1.2a1
[FIXED] Design bug in navigator
[CHANGED] Design tweaks in Habbo Search
[FIXED] Design bug in articles
[CHANGE] Design tweaks in Preferences
Translations 1.2a2
Release 1.2a2
Release 1.2b1

[CHANGED] Design tweaks in Habbo Search
[CHANGE] Design tweaks in Preferences
[FIXED] Design bug in navigator
[FIXED] Design bug in articles