Refined header image handling
Merge branch 'feature/scaled-header-bg-image' into develop
Header image and nav menu style tweaks
Changed theme name for localization domain
Revert "Changed theme name for localization domain"

This reverts commit eb95ed01682666b3efeea066bc0a60f99f7fa872.
Changed theme name used for localization domain
Refined header style for background image
Enhanced top menu & header styling