SLING-3120 - Allow installing/updating the install support bundle from
the servers view

Separate the artifacts into a org.apache.sling.ide.artifacts bundle.
This bundle now allows access to the tooling support bundle ( for now ).

Installation works from the servers view, refresh after installation
pending though.

git-svn-id: https://svn.apache.org/repos/asf/sling/branches/tooling-ide-vlt@1526588 13f79535-47bb-0310-9956-ffa450edef68