Some Transactions view adjustments

-moved js to customers and users components, in order to use accordion.
-Made the transaction form a little prettier

app/components/customers/javascripts/init_component.js

@@ -0,0 +1,11 @@
+{
+  initComponent: function(){
+    // calling superclass's initComponent
+    this.callParent();
+    this.getView().on('itemclick', function(view, record){
+      // The beauty of using Ext.Direct: calling 3 endpoints in a row, which results in a single call to the server!
+      console.log("user: " + record.get('id') );
+      this.selectCustomer({customer_id: record.get('id'), customer_type: 'Customer'});
+    }, this);
+  }
+}