LB-1750: Update tageswoche theme

Added liveblog.css from the old embed.
LB-1838: Incorrect timestamps on initial set of SEO/HTML posts

Added moment timezone option into internationalization.
Added moment-timezone library from bower.
Updated moment.js node pakage to 2.7.0 (needed by moment-timezone)
Rebuild.
Merge pull request #199 from nistormihai/concurrency-fix

Concurrency fix