Fork: Fix background fork target box
Notifications: Fix PR icon color and age text
Global: Make green panels more readable
Global: Tweak green colors
Code View: Make linked highlight more visible
Overall: Replace some yellow styles with brown. Fixes #184
Overall: Add missing !important flag
Main repo page: fix recently pushed branches notification
Compare: Match button text color to links
Fix readme & comment unstyled links

See https://github.com/StylishThemes/GitHub-Dark/commit/d922eb4f212dbbf24d30619abad481daa30bb63c#commitcomment-8034638
Alert (blue tips): fix text and link colors
version bump
Merge branch 'master' into gh-pages