UI: fixed workflow execution don't work

* fixed workflow execution param name, which was changed on
  python-mistral-client API.
* As we don't have a running regression: 
  PLEASE - if you change any API calls do let a UI developer know
  and/or open and assign a bug

Partially implements blueprint: mistral-dashboard-executions-screen

Change-Id: I5321b4b568cc1bd03ff641e4fd120f1ed64c29b8

mistraldashboard/workflows/forms.py

@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-#
 # Copyright 2014 - StackStorm, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -44,6 +42,7 @@ class ExecuteForm(forms.SelfHandlingForm):
 
     def handle(self, request, data):
         try:
+            data['workflow_identifier'] = data.pop('workflow_name')
             ex = api.execution_create(request, **data)
 
             msg = _('Execution has been created with id "%s".') % ex.id

mistraldashboard/workflows/tables.py

@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-#
 # Copyright 2014 - StackStorm, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -86,8 +84,14 @@ class WorkflowsTable(tables.DataTable):
         verbose_name=_("Name"),
         link="horizon:mistral:workflows:detail"
     )
-    tags = tables.Column(tags_to_string, verbose_name=_("Tags"))
-    inputs = tables.Column(cut, verbose_name=_("Input"))
+    tags = tables.Column(
+        tags_to_string,
+        verbose_name=_("Tags")
+    )
+    inputs = tables.Column(
+        cut,
+        verbose_name=_("Input")
+    )
     created = tables.Column(
         "created_at",
         verbose_name=_("Created"),