Merge pull request #199 from chimericdream/master

Fix background colors on files and diffs
Markdown: Tweak inline code blocks
Demo: update to use latest syntax highlighting classes
Themes: remove pygments styles
version bump
Theme: update custom theme template
Diff: Fix line number color and highlights
Gist: Fix 'View gist' button
Developer: Few tweaks/fixes
Themes: add default twilight code highlighter to partially supported themes
version bump
Readme: Fix plaintext readme background
Settings: Fix delete buttons
Twilight: Fix Java variables and Ruby regex highlighting
Organizations: Lots of tweaks/fixes
Organization: Fix members tables
Global: Fix header logo hover
Themes: update Twilight theme
Themes: fully support tomorrow night themes
Themes: fully support monokai theme