5.80.7 - lint changes.

• CHANGED - CiviLint - made Thames CSS more verbose (#84 (closed))
• CHANGED - CiviLint - reduced four char spaces to two
• CHANGED - CiviLint - changes to PHP files
• CHANGED - CiviLint - no empty variables
• CHANGED - .gitignore file updated
• REMOVED - Duplicate BoostrapJS files

Based on most recent commits made by @ufundo in this PR: https://github.com/civicrm/civicrm-core/pull/31478/commits