Removed Ubuntu PPA references on the Download page
Put GVM in the first column in the footer of the downloads page
Remove extra spaces before colons on all fields on the plugin pages.

The extra colon before a space is bad writing style and it makes the fields less legible.
Merge pull request #28 from ColinHarrington/RemoveUbuntuPpaLink

Removed Ubuntu PPA references on the Download page.
Merge pull request #29 from kenliu/fix-spaces-before-colons

Remove extra spaces before colons on all fields on the plugin pages.