moved skin to mol-plugin-ui

src/apps/basic-wrapper/index.ts

src/apps/demos/lighting/index.ts

src/apps/viewer/index.ts

src/examples/proteopedia-wrapper/index.ts

src/mol-plugin-ui/skin/base/base.scss

...mol-plugin-ui/skin/base/bootstrap/_bootstrap-compass.scss

src/mol-plugin-ui/skin/base/bootstrap/_bootstrap-mincer.scss

...l-plugin-ui/skin/base/bootstrap/_bootstrap-sprockets.scss

src/mol-plugin-ui/skin/base/bootstrap/_bootstrap.scss

src/mol-plugin-ui/skin/base/bootstrap/bootstrap/_alerts.scss

src/mol-plugin-ui/skin/base/bootstrap/bootstrap/_badges.scss

...plugin-ui/skin/base/bootstrap/bootstrap/_breadcrumbs.scss

...ugin-ui/skin/base/bootstrap/bootstrap/_button-groups.scss

...mol-plugin-ui/skin/base/bootstrap/bootstrap/_buttons.scss

...ol-plugin-ui/skin/base/bootstrap/bootstrap/_carousel.scss

src/mol-plugin-ui/skin/base/bootstrap/bootstrap/_close.scss

src/mol-plugin-ui/skin/base/bootstrap/bootstrap/_code.scss

.../skin/base/bootstrap/bootstrap/_component-animations.scss

...l-plugin-ui/skin/base/bootstrap/bootstrap/_dropdowns.scss

src/mol-plugin-ui/skin/base/bootstrap/bootstrap/_forms.scss