Merge pull request #1 from koding/settings-pane

Settings pane - WIP thanks @usirin
Revert pistachio changes.
Added icon for settings pane.
Add editor settings
Add editor settings to includes
Split createSettings into 2 different methods for terminal and editor.
Start using editor settings and change variable names to prevent name collisions.
Add terminal settings.
Add terminal settings UI elements.
Add basic styling.