SEO ranking widget doesn't show other sites' ranking any more #2869

In the SEO ranking widget I used to enter another site url and get the corresponding ranking values.

Sinces 1.6 update it doesn't work any more:

• I write the url in the text box
• I hit the "rank" button
• the values for my site are shown

The SEO widget is still working for me if I use an URL starting with http(s)://
But we should fix it to work without it aswell.

At the same time, remove Yahoo backlinks /indexed pages. Yet another Yahoo feature that got the axe.

(In [5680]) fixes #2869 removed yahoo backlink and indexed pages check; checking urls without http:// is now possible

thank you!!!