Restrict creating organisations by user (#193)

* restrict creating organizations based on right on user

* revert bindata.go

* reverse vendor lib

* revert goimports change

* set AllowCreateOrganization default value to true

* revert locale

* added default value for AllowCreateOrganization

* fix typo in migration-comment

* fix comment

* add coments in migration

models/org.go

@@ -97,6 +97,10 @@ func (org *User) RemoveOrgRepo(repoID int64) error {
 
 // CreateOrganization creates record of a new organization.
 func CreateOrganization(org, owner *User) (err error) {
+	if !owner.CanCreateOrganization() {
+		return ErrUserNotAllowedCreateOrg{}
+	}
+
 	if err = IsUsableUsername(org.Name); err != nil {
 		return err
 	}