Issue #3: mobile client fallback version

models/models.go

@@ -1,3 +1,4 @@
+// Provides high-level public data models used for communication mainly with mobile clients
 package models
 
 //EncryptedSplit when encrypt attachemt
@@ -7,12 +8,6 @@ type EncryptedSplit struct {
 	Algo       string
 }
 
-//SessionSplit split session
-type SessionSplit struct {
-	Session []byte
-	Algo    string
-}
-
 //EncryptedSigned encrypt_sign_package
 type EncryptedSigned struct {
 	Encrypted string