Fix ttls template

Add a guiutils module for gui-related functions/classes that are used in multiple modules.
Replace os.access with os.path.exists
Make the static gateway entry optional.
Don't auto-connect/reconnect when the gui is open.
Fix bug that would keep the gui from working if the wired network entry was displayed.

encryption/templates/ttls

@@ -1,7 +1,7 @@
 name = TTLS with WEP
 author = Adam Blackburn
 version = 1
-require anonymous_identity *Anonymous_Identity identity *Identity password *Password auth *Authentication
+require identity *Identity password *Password auth *Authentication
 -----
 ctrl_interface=/var/run/wpa_supplicant
 network={
@@ -9,7 +9,7 @@ network={
 	scan_ssid=$_SCAN
 	eap=TTLS
 	key_mgmt=IEEE8021X
-	identity="$_USERNAME"
+	identity="$_IDENTITY"
 	password="$_PASSWORD"
 	phase2="auth=$_AUTH"
 }