Resolve "Harmonize prettier and eslint configs"

What does this MR do?

• Upgrades prettier to 1.14
• Adds eslint-config-prettier to our eslint config to disable conflicting rules
• Removes manually overridden rules from config
• Removes all unnecessary eslint-disable statements from offending files (prettier will enforce these rules now)

What are the relevant issue numbers?

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• Tests added for this feature/bug
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides

Closes #52233 (closed)