Merge pull request #33 from ichim-david/master

Embed-chart enhancements
Prepare eea.googlecharts 11.7.
Updated version for eea.googlecharts to 11.8-dev
Refs #21467; embed-dashboard enhancements:

- Added get_dashboard_embed method to chart.py since we need the dashboard
  info as a python dict instead of a json string
- Made googlecharts-share div into a macro that is loaded by
  embed-dashboard
- Removed the inline styles which are loaded now from embed.css
- Added the same meta tags, title and doctype like in embed-chart