JBIDE-17849 CSS Hyperlinks aren't working on non-WTP projects

An utility helper method is added due to find pages in projects that are not the WTP ones
(has no web-roots that can be achieved by WTP methods)
JUnit test case is added to WebUtilsTest

Signed-off-by: vrubezhny <vrubezhny@exadel.com>
JBIDE-17987 Bogus syntax warning for EL 3.0 list literal

Supported literal arrays in EL.
JBIDE-17965 - update stacks lib, fix prestacks url fetching