SLING-3031 - [Tooling] add whitelabel support for slingclipse

Enrich and consistently use the WhitelabelSupport class throughout the
UI classes.

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1600477 13f79535-47bb-0310-9956-ffa450edef68
SLING-3031 - [Tooling] add whitelabel support for slingclipse

Whitelabel support for the SlingConsoleFactory.

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1600478 13f79535-47bb-0310-9956-ffa450edef68