Pyrin

* All dependencies upgraded
* Codes revised to support sqlalchemy 1.4
* Dropped support for sqlalchemy < 1.4
* Dropped support for python < 3.6
* Title case normalizer revised to perform more practical
* Minor bug fixes

- Added action button support for admin list pages

- Fix application's security package not to require component to be available if the app does not need to override default security package

- Pin dependency versions in setup.py as well as Pipfile
- Improve swagger metadata
- Implement admin panel feature and services
- Revise pagination bugs
- Enhance validators
- Enhance different config stores
- Implement internal users for admin, audit and swagger usage
- Implement authenticators for admin, audit and swagger apis
- Minor code enhancements
- Minor bug fixes

* Minor code enhancements
* Enable validated for entity columns by default
* Minor bug fixes in validation services
* Implement configurable http response codes for different http methods
* Enhance swagger schema metadata extraction

* Fixed flasgger dependency error