Update the module as per latest Drupal

Problem/Motivation

There are a lot of issues as per the CI test https://www.drupal.org/pift-ci-job/760086. Plus, I found that that views field no longer renders link as image.

Proposed resolution

• Update the code/config as per latest Drupal codebase
• Fix the code standard issues
• Update the field plugin so that link renders as link

Remaining tasks

N/A

User interface changes

N/A

API changes

N/A

Data model changes

N/A