Fix Dashboard Repo boxes

probably broken by latest GitHub Markup/Style Update
Style issue open/closed buttons with gradients

Gradients were all over the place already, thought it looks nicer with them on issues as well :)
Merge pull request #22 from mihawk90/patch-1

Fix Dashboard Repo boxes
Merge pull request #23 from mihawk90/patch-2

Style issue open/closed buttons with gradients
More state indicators
merge & some updates
Merge pull request #24 from mihawk90/patch-3

More state indicators
Merge branch 'master' of https://github.com/Mottie/Github-Dark
more tweaks