Create web content stylesheet

Created by: rrhyne

The addition of 'web' oriented styles have been added to the following components and their scss files and require consolidation once they are properly defined within the global styles:

SearchPage.tsx & SearchPage.scss RepositoryGroupPage.tsx & RepositoryGroupPage.scss PrivateCode.tsx & PrivateCode.scss

Additionally, on RepositoryGroupPage.tsx, several font-weight-normal overrides are occurring to meet the design specification with existing styles. The font weight should be incorporated into the web-styles elements.