Escene provision (#1140)

* Add. Provision to Escene ES330/ES320

* Add. Look up Escene device by ext+domain.

* Update Escene template.

* Add. `provision` section in config.

Found than ES330 some time hangup when it try get software/core and get error from fusion.

.htaccess

@@ -31,4 +31,7 @@ RewriteRule     ^.*/([A-Fa-f0-9]{12})-site.cfg$						app/provision/?mac=$1&file=
 RewriteRule     ^.*/([A-Fa-f0-9]{12})-web.cfg$						app/provision/?mac=$1&file=web.cfg [QSA]
 RewriteRule     ^.*/([A-Fa-f0-9]{12})-directory.xml$					app/provision/?mac=$1&file=directory.xml [QSA]
 
+#Escene
+RewriteRule     ^.*/provision/([A-Fa-f0-9]+)_Extern.xml$              app/provision/?ext=$1&file={$mac}_extern.xml [QSA]
+
 Options -Indexes