Add L2tpIpsecPskEditor.

* Changes
  + Add L2tpIpsecPskEditor.java.
  + Save profile name in VpnEditor to be used in saveSecrets().
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 7c6529d..fb806c9 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -1895,6 +1895,11 @@
     <string name="vpn_l2tp_secret">L2TP secret</string>
 
     <!-- Preference title -->
+    <string name="vpn_ipsec_presharedkey_title">Set IPSec pre-shared key</string>
+    <!-- Complete term -->
+    <string name="vpn_ipsec_presharedkey">IPSec pre-shared key</string>
+
+    <!-- Preference title -->
     <string name="vpn_psk_title">Set IPSec pre-shared key</string>
     <!-- Complete term -->
     <string name="vpn_psk">IPSec pre-shared key</string>
@@ -1961,6 +1966,8 @@
     <string name="cstor_confirm_password">Confirm new password:</string>
     <!-- Description when user set up the storage for the very first time -->
     <string name="cstor_first_time_hint">You must set a password for credential storage before you can store secure certificates and other credentials in it.</string>
+    <string name="cstor_password_error">Passwords do not match.</string>
+    <string name="cstor_password_empty_error">Please fill up all the fields.</string>
 
     <!-- Sound settings screen, setting check box label -->
     <string name="emergency_tone_title">Emergency tone</string>