slight tweaks and modernizations

- adding sidebar-pane to fit with chrome 26's layout
- commenting out certain .selected styles so we keep
    an input text cursor
- few stylistic color changes for higher contrast to match with
    Monokai's color theme
- showing certain triangles white because they were black before
    (black on black is not good)

committed & developed with help from DefiantBidet
EDIT: fixed triangle problem