add facebook-sdk to comoser and add rule to birth_date to allow null value
remove facebook sdk from composer
Merge pull request #1333 from makhov/dev

add rule to birth_date to allow null val
Merge branch 'master' into dev
Merge branch 'master' into dev
Merge branch 'master' into dev
Merge branch 'dev' of https://github.com/yupe/yupe into dev
Merge branch 'master' into dev
closed #1307
closed #1363
#1188