Delete configuration (block bundle and fields) when the module is uninstalled

Problem/Motivation

When the module is uninstalled all the configuration setup by it (with exception of the popup_block.settings) remains installed on the site, which may cause some issues if we re-installed the module.

Steps to reproduce

Just run drush pmu popup_block -y && drush en popup_block -y and watch it explode

Proposed resolution

• Provide a check before uninstall to prevent the module from been uninstalled if any block content is present
• Enforce dependency with module for all installed configs
• Remove the cache_popup_block_viewed cache bin

Remaining tasks

TBD

User interface changes

N/A

API changes

N/A

Data model changes

N/A