JBIDE-16687 provide access to palette entries via content assist

CDI and JSF UI JUnit Tests are fixed

Signed-off-by: vrubezhny <vrubezhny@exadel.com>
JBIDE-17182 org.jboss.tools.jsf.test tests failure on Windows
JBIDE-17197 org.jboss.tools.cdi.text.ext.test failures on Windows

Fixed BeansXmlHyperLinkTest
JBIDE-17195 org.jboss.tools.cdi.seam.solder.core.test failures on Windows
JBIDE-17183 org.jboss.tools.jsf.text.ext.test failure on Windows

offsets replaced by substrings
JBIDE-17194 org.jboss.tools.cdi.seam.core.test failure on Windows

offsets replaced by substrings
JBIDE-17196 org.jboss.tools.cdi.seam.text.ext.test failures on Windows

offsets replaced by substrings
JBIDE-17185 org.jboss.tools.cdi.core.test failures on Windows

Excluded exact offsets in asserts, because different line ends
for different OS.