Squashed 'plugins/embed/' changes from 5e9f2ac..f1a30f5

f1a30f5 Merge pull request #206 from nistormihai/master
a23fab2 LB-1816 HTML generated by SEO contains references to JS files from nodejs server
3907fb7 LB-1816 HTML generated by SEO contains references to JS files from nodejs server
6102602 LB-1841 New embed is not working on tageswoche site.
c22de84 Merge pull request #205 from nidzix/test2
1646c3b LB-1842: additional fix
74d1f38 Merge pull request #203 from nidzix/master
41b6072 LB-1842: Quirks mode is not looking good for stt.
8525e58 Merge pull request #202 from nistormihai/master
2c50049 LB-1838 Fixed testing suite

git-subtree-dir: plugins/embed
git-subtree-split: f1a30f55d9757dd6064acad9e4b41ef1ac996cfc
Merge commit '0cc6278db9089f1a34dd3cbd6be160e9f145cb54' into devel-merge
Merge pull request #779 from nistormihai/devel-merge

Devel merge