New styles
Styles

* Fix sidebar selector color
* Fix footer color and margin
Footer and header with new styles
Delete unused custom_color variables
Fix header/footer align to body

* Add flat button
Add rss button
Add border to content
Change link to signup instead of register to early beta
Remove comented code
New style adjusts
Merge pull request #1 from GrapheneDB/new-styles-source

New styles for blog