[FIX] web: SelectCreateDialog: don't erase domain

When a SelectCreateDialog was opened with a given domain, this
domain was completely lost if the user wrote a new domain (or
groupby) in the searchview, whereas they should be concatenated.

addons/web/static/src/js/views/view_dialogs.js

@@ -375,11 +375,9 @@ var SelectCreateDialog = ViewDialog.extend({
         });
     },
     _process_search_data: function (domains, contexts, groupbys) {
-        var user_context = this.getSession().user_context;
-        contexts = [user_context].concat(contexts);
         var results = pyeval.eval_domains_and_contexts({
-            domains: domains || [],
-            contexts: contexts || [],
+            domains: [this.domain].concat(domains),
+            contexts: [this.context].concat(contexts),
             group_by_seq: groupbys || []
         });
         return {