LPS-44122 Remove old highlight methods from StringUtil & StringUtil_IW as they got deprecated as of 6.1.0
LPS-44122 Move highlight methods from StringUtil to SearchUtil, as these operations are related to search. No logic changes
LPS-44122 Create a new constant

Deprecate old methods.
LPS-44122 Update unit tests
LPS-44122 Uses the new class instead of the deprecated method
LPS-44122 Handle search-related escape & highlight operations through the Summary

It's safe to refactor _higlight & getHighlighted methods, as they exist on master only and were added by a recent fix for LPS-44123
LPS-44122 SF - Uses class var _hightlight and removes escape var, because when we do a hightlight of a text we should do the operations of escape and hightlight in the right order
LPS-44122 Apply new Summary pattern to AppViewSearchEntry taglib
LPS-44122 Apply to Search portlet
LPS-44122 Apply to Web Content Search portlet
LPS-44122 SF
LPS-44122 Pass arguments without esacping them in portlets - let the taglib take care of it
LPS-44122 Javadoc for Summary - delete this commit if you think it's useless
LPS-44122 Javadoc
Revert "LPS-44122 Javadoc"

This reverts commit 353b91528f06deab45e1881184b19122c9d791ae.
Revert "LPS-44122 Javadoc for Summary - delete this commit if you think it's useless"

This reverts commit 604e7d18cbbc6c3ef76340611751d24321adc1fd.
LPS-44122 Jim, please readd. Thx.
LPS-44122 SF