Decoupled Navbar styling in Panopoly Admin

[mglaman]

There's an RTBC patch in Panopoly for decoupling Navbar styling from Panopoly Admin. https://www.drupal.org/node/2051621

This would move the Navbar styling (the tray adjustments) to panopoly-admin-navbar.css, allowing the theme to keep panopoly-admin.css set. This will fix any Navbar styling issues while preserving Panopoly Navbar icons.

[dsnopek]

This may break Kalatheme styling if it's specifically overriding panopoly-admin.css to override Navbar, as this is in a new file. (Although, we haven't checked).

[thiagodemellobueno]

This will likely resolve #143, no?

[soniktrooth]

#143 was closed in favour of this one.