Use "open" range for features references
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/karaf
Revert "Add link to KarafEE - Charles till the migration process is done"

This reverts commit 74a9c72a8467e139c9d7a5de33f9416e82ecaaaf.

Please avoid to add "personal" reference in Karaf core codebase