Center images on single portfolio page [Johan request]
Lowered team avatars borders to 1px on team page [Johan request]
Change homepage slider to user portfolio-large image size instead of the original size
Refactor image sizes (this commit, when applied, will need the WP admin to force all thumbnails regeneration)
Add lightbox (in gallery mode) to single-portfolio page
Merge branch 'feature/post-initial-release-changes' into develop