Squashed 'plugins/embed/' changes from f1a30f5..3ac31b0

3ac31b0 Merge pull request #208 from nidzix/master
8fd9ebd LB-1849: Remove certain classes from both zeit themes
7aa7f44 Merge pull request #207 from nistormihai/master
27a1dd8 Update config.sample.json

git-subtree-dir: plugins/embed
git-subtree-split: 3ac31b03151b8a7c7faa9aa1fdb5e31efaecd162
Merge commit 'b13669b26c5bc7869f5dabca4cbd4b4ddf7f1077' into devel-merge