A collection of configuration modifications.
On Windows copy the notifcations.xml file to this directory:
C:\Program Files\Firestorm-Releasex64\skins\default\xui\en\
On Linux if you kept the default user install path:
~/firestorm/skins/default/xui/en
Place the settings_friends_groups.xml file in this directory.
Windows:
C:\Users\YOURPCUSERNAME\AppData\Roaming\Firestorm_x64\YOUR_AVATAR\
Linux:
~/.firestorm_x64/your_avatar/