JBIDE-17866 JSF/KB memory leak

UniquePaths cleaned at project deletion.
Resource and Java model listeners are removed at project deletion.
JBIDE-17878 very slight adjustmenets by 2 pixels of some widgets in terms and conditions page
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>