Merge branch 'working-docker' into 'master'

plugins/tag_cloud/README.rst

plugins/tag_cloud/__init__.py

plugins/tag_cloud/tag_cloud.py

plugins/tag_cloud/test_data/article_1.md

plugins/tag_cloud/test_data/article_2.md

plugins/tag_cloud/test_data/article_3.md

plugins/tag_cloud/test_data/article_4.md

plugins/tag_cloud/test_data/article_5.md

plugins/tag_cloud/test_tag_cloud.py

requirements.txt

themes/limos/templates/includes/sidebar.html