update config, sass and assets

_config.yml

_sass/color_schemes/dark.scss

_sass/color_schemes/light.scss

_sass/color_schemes/win.scss

_sass/support/_functions.scss

_sass/support/_variables 2.scss

_sass/support/_variables.scss

_sass/support/mixins/_buttons.scss

_sass/support/mixins/_layout.scss

_sass/support/mixins/_typography.scss

_sass/support/mixins/mixins.scss

_sass/support/support.scss

assets/css/just-the-docs-dark.scss

assets/css/just-the-docs-default.scss

assets/css/just-the-docs-light.scss

assets/css/logo-owc-small.png

assets/images/WIN.png

assets/images/just-the-docs.png

assets/images/logo-owc-gold.png

assets/images/logo-owc-small.png