LB-1442: As blog admin I want to be able to change the SEO related settings

Added interface for the changes made by Nelu
LB-1442: As blog admin I want to be able to chenge the SEO related settings

added 'my' on post request for new seo item
LB-1442: As blog admin I want to be able to change the SEO related settings

removed test data and fixed an indenting issue
Merge pull request #630 from vladnicoara/liveblog16-seo

LB-1442: As blog admin I want to be able to change the SEO related settings