SLING-3102 - Inconsistent behaviour when loading archetypes in new Sling
bundle project wizard

Correct error reporting - dig down into the root cause of an
InvocationTargetException.

git-svn-id: https://svn.apache.org/repos/asf/sling/branches/tooling-ide-vlt@1526019 13f79535-47bb-0310-9956-ffa450edef68
SLING-3106 - Do not try to sync version control files

Honour the team private flag on resources.

git-svn-id: https://svn.apache.org/repos/asf/sling/branches/tooling-ide-vlt@1526021 13f79535-47bb-0310-9956-ffa450edef68