Tenders: Added validation: Presence
adding country code to Sys::User to use with mobile number
validate only georgian mobiles
Update user.rb
Update user.rb
Merge branch 'master' of github.com:telasi/telasi.ge

Conflicts:
	app/models/sys/user.rb
Merge pull request #24 from telasi/customer_registration

Merge pull request #22 from telasi/master
Merge pull request #23 from telasi/master

user changes