Implemented username saving to settings and loading. Saved username store_username
[situare] / src / facebookservice /
drwxr-xr-x   ..
-rw-r--r-- 8240 facebookauthentication.cpp
-rw-r--r-- 5367 facebookauthentication.h
-rw-r--r-- 2231 facebookcommon.h
-rw-r--r-- 2307 facebookcredentials.cpp
-rw-r--r-- 3737 facebookcredentials.h