JBIDE-17505 : Align severities for folders-to-be-created messages

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBDS-3066 : ensure ide-config.properties loads from org.jboss.tools.foundation.core when offline

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-17250 org.jboss.tools.jst.web.ui.test failure on Windows

Additional asserts are added to content assistant test utilities

Signed-off-by: Victor V. Rubezhny <vrubezhny@exadel.com>