user: public: better titles
user: public: add rel attr to tags
better seo for public pages
Merge branch 'CDB-3984' into CDB-3986
Merge branch 'CDB-3987' into CDB-3986

Conflicts:
	app/assets/stylesheets/public_dashboard/public_dashboard.css.scss
	app/views/admin/pages/public.html.erb
	app/views/admin/pages/public_organization.html.erb
user: public page: fix letter spacing
user: public page: fix line height
user: public page: fix line height
user: public page: add missing rels
Merge pull request #783 from CartoDB/CDB-3986

SEO changes for user/org public pages