Merge pull request #199 from nistormihai/concurrency-fix

Concurrency fix
Tageswoche css fix
Merge pull request #200 from nidzix/tageswoche-fix

Tageswoche css fix
LB-1841 New embed is not working on tageswoche site

Blog rendering is now cheking for rootSel selector instead of
cheking that the element is empty.
Merge pull request #201 from nistormihai/master

LB-1841 New embed is not working on tageswoche site