Adjustments and Improvements:

- Adds extra attribute in Push model;
- Adds recipient_id and extra keys in payloads built on mountPayloads() method of PushRepository;
- Updates versions of the project dependencies.

Adjustments and Improvements:

- Adds timestamp in Push model;
- Adds some info in mount of firebase payloads;
- Adds DASHBOARD_HOST env variable;
- Updates versions of the project dependencies.

Adjustments and Improvements:

- Adding ISO 639-1 standardization in the PushMessage model;
- Updates versions of the project dependencies.

Adjustments and Improvements:

- Changes MongoDB connection configs to access certificates path instead of certificates content;
- Updates versions of the project dependencies.

Adjustments and Improvements

- Adjusts ConnectionFactoryMongodb's createConnection method options;
- Changes the BaseRepository constructor access modifier from protected to public;
- Fixes type of some catch errors;
- Updates dependencies:
  - Unlocks mongoose version.

Adjustments and Improvements:

- Adding general adjustments in EmailRepository;
- Updating EmailValidator;
- Updating EventBusRabbitMQ;
- Updating .env.example;
- Updates versions of the project dependencies.

New Features and Adjustments:

- Adding user_id attribute in Push resource;
- Updates versions of the project dependencies.

Adjustments and Improvements:

- Adds the possibility to use custom email templates through an environment variable in EmailRepository;
- Updates .env.example;
- Updates versions of the project dependencies.

Adjustments and Improvements:

- Adding environment variable to the email sender's name;
- Fixing some repository and service interfaces;
- Updates versions of the project dependencies.

Merge branch 'release/1.3.0'

# Conflicts:
#	.env.example
#	.travis.yml
#	Dockerfile
#	README.md
#	package-lock.json
#	package.json
#	src/background/background.service.ts
#	src/background/task/subscribe.event.bus.task.ts
#	src/utils/config.ts
#	src/utils/default.ts
#	src/utils/strings.ts
#	test/unit/utils/custom.logger.spec.ts
#	test/unit/utils/json.utils.spec.ts