Log Message:
Update py-flask-admin to 1.5.0.

1.5.0
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* Fixed CSRF generation logic for multi-process deployments
* Added WTForms >= 3.0 support
* Flask-Admin would not recursively save inline models, allowing arbitrary
  nesting
* Added configuration properties that allow injection of additional CSS and
  JS dependencies into templates without overriding them
* SQLAlchemy backend
  - Updated hybrid property detection using new SQLAlchemy APIs
  - Added support for association proxies
  - Added support for remote hybrid properties filters
  - Added support for ARRAY column type
* Localization-related fixes
* MongoEngine backend is now properly formats model labels
* Improved Google App Engine support:
  - Added TextProperty, KeyProperty and SelectField support
  - Added support for form_args, excluded_columns, page_size and
    after_model_update
* Fixed URL generation with localized named filters
* FileAdmin has Bootstrap 2 support now
* Geoalchemy fixes
  - Use Google Places (by default) for place search
* Updated translations
* Bug fixes fixes