cyclades ui: Always send network type in create request

type parameter is mandatory in private network creation requests.

snf-cyclades-app/synnefo/ui/static/snf/js/models.js

@@ -1680,9 +1680,10 @@
                 }
             };
 
-            if (type) {
-                params.network.type = type;
+            if (!type) {
+                throw "Network type cannot be empty";
             }
+            params.network.type = type;
             if (cidr) {
                 params.network.cidr = cidr;
             }

snf-cyclades-app/synnefo/ui/static/snf/js/ui/web/ui_networks_view.js

@@ -219,9 +219,7 @@
                 this.type_select.append($('<option value='+value+' class="subnet">'+name+'</option>'));
             }, this);
             
-            this.disable_network_type = false;
             if (_.keys(synnefo.config.network_available_types).length <= 1) {
-                this.disable_network_type = true;
                 this.type_select.closest(".form-field").hide();
             }
 
@@ -339,8 +337,6 @@
             var subnet = null;
             var type = this.type_select.val();
 
-            if (this.disable_network_type) { type = null };
-
             if (dhcp) {
                 if (this.subnet_select.val() == "custom") {
                     subnet = this.subnet_custom.val();