[NX-607] Repository context menu
Merge pull request #652 from sonatype/NX-609-repository-menu

REVIEW: [NX-607] Repository context menu
[NX-610] Make https://repo1.maven.org/maven2/ the default URL for "central" repository
[NX-610] Make https://repo1.maven.org/maven2/ the default URL for "central" repository
Related, update apache and codehaus snapshot proxys to use https
[NX-408] Add nexus karaf branding
Make out of service repositories not browsable
removed uneeded instructions
Refine welcome banner a wee bit
[NX-408] Refine branding, add ssh branding, pending how to test this
Merge pull request #654 from sonatype/NX-408-nexus-karaf-branding

REVIEW: [NX-408] Add nexus karaf branding
[NX-243] disable unset plugin-info details
Merge remote-tracking branch 'origin/master' into NX-380-functional-tests