Revert "Update files and directories ignored by Git"

This reverts commit 145c097375f8e0b4052df7d08205bc6c101836a2.

Update files and directories ignored by Git

Move image assets in `/assets/images`

Add theme screenshot

Add rake task for testing theme during development
- `bundle exec rake preview`

Add .gemspec

Swap `github-pages` gem with latest Jekyll
- Add Jekyll plugins

add german (Deutsch) translation (#546)

Thanks @rschaerer!

Merge branch 'release/3.4.8' into develop

Update CHANGELOG.md and bump version to 3.4.8

Update gems: `github-pages` (96), `jekyll-mentions` (1.2.0)

Merge branch 'feature/portuguese-update' into develop

Re-add Brazilian Portuguese localized strings

Merge branch 'master' of https://github.com/fa-ribeiro/minimal-mistakes into feature/portuguese-update

includes: Enhance Twitter share link (#538)

* Include the page title before the URL
* If twitter.username is set, pass the `via` paramter for attribution

Fixed Last.fm URL (#540)

lastfm.com/user... results in a server error, last.fm/user... is the correct URL.

update Portuguese translation

Merge branch 'feature/large-screen-font-size' into develop

Merge branch 'master' of https://github.com/jhabdas/minimal-mistakes into feature/large-screen-font-size

Typography for larger viewports. Closes #533